Every 1 September to 9 October in Knoxville, TN from 1871 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.
| Year | Mean, °F | Rank | High, °F | Rank | Low, °F | Rank | Precipitation, in | Rank | Days missing |
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| 2026 | 75.9 | 6 | 86.9 | 5 | 65 | 6 | 3.86 | 65 | 0 |
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| 2025 | 71.3 | 41 | 81.7 | 47 | 61 | 44 | 2.99 | 92 | 0 |
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| 2024 | 72.1 | 31 | 82.3 | 35 | 62 | 30 | 6.33 | 19 | 0 |
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| 2023 | 71.6 | 37 | 83 | 28 | 60.1 | 58 | 0.67 | 153 | 0 |
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| 2022 | 67.7 | 119 | 78.7 | 107 | 56.7 | 121 | 2.52 | 101 | 0 |
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| 2021 | 70.9 | 49 | 80.3 | 72 | 61.6 | 33 | 5.18 | 29 | 0 |
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| 2020 | 68.7 | 94 | 78.5 | 110 | 58.9 | 79 | 4.57 | 45 | 0 |
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| 2019 | 77.7 | 1 | 89.7 | 1 | 65.6 | 4 | 0.06 | 156 | 0 |
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| 2018 | 76.4 | 4 | 85.3 | 13 | 67.4 | 1 | 7.40 | 11 | 0 |
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| 2017 | 69.8 | 74 | 81 | 60 | 58.7 | 83 | 4.59 | 44 | 0 |
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| 2016 | 74.5 | 12 | 86.8 | 6 | 62.2 | 27 | 1.42 | 141 | 0 |
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| 2015 | 71 | 46 | 80.5 | 69 | 61.5 | 35 | 3.39 | 77 | 0 |
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| 2014 | 70.8 | 52 | 80.8 | 63 | 60.8 | 49 | 1.72 | 129 | 0 |
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| 2013 | 70.6 | 55 | 81.1 | 58 | 60 | 62 | 4.73 | 38 | 0 |
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| 2012 | 68.3 | 100 | 77.9 | 124 | 58.6 | 86 | 8.73 | 8 | 0 |
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| 2011 | 67.6 | 122 | 78 | 121 | 57.2 | 115 | 8.74 | 7 | 0 |
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| 2010 | 69.9 | 70 | 81.6 | 50 | 58.3 | 89 | 4.34 | 53 | 0 |
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| 2009 | 69.5 | 78 | 77.8 | 127 | 61.3 | 39 | 5.92 | 21 | 0 |
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| 2008 | 70.7 | 54 | 81.5 | 51 | 59.9 | 63 | 4.03 | 61 | 0 |
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| 2007 | 74.4 | 13 | 86.3 | 9 | 62.5 | 23 | 1.69 | 132 | 0 |
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| 2006 | 67.4 | 125 | 77.3 | 132 | 57.4 | 110 | 7.33 | 13 | 0 |
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| 2005 | 72.8 | 25 | 84.6 | 17 | 60.9 | 47 | 2.68 | 98 | 0 |
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| 2004 | 68.7 | 94 | 78.5 | 110 | 58.8 | 80 | 4.78 | 36 | 0 |
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| 2003 | 66.9 | 136 | 77.2 | 133 | 56.6 | 126 | 5.14 | 31 | 0 |
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| 2002 | 73.9 | 18 | 83.7 | 23 | 64.2 | 8 | 6.03 | 20 | 0 |
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| 2001 | 65.9 | 149 | 76.7 | 138 | 55.1 | 146 | 3.78 | 67 | 0 |
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| 2000 | 68.1 | 105 | 78.4 | 115 | 57.8 | 98 | 3.82 | 66 | 0 |
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| 1999 | 68.1 | 105 | 81.4 | 53 | 54.7 | 150 | 2.06 | 116 | 0 |
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| 1998 | 74.2 | 15 | 86.1 | 12 | 62.3 | 25 | 2.66 | 99 | 0 |
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| 1997 | 70.2 | 63 | 81.5 | 51 | 58.8 | 80 | 3.32 | 81 | 0 |
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| 1996 | 67.1 | 130 | 76.6 | 139 | 57.6 | 102 | 3.62 | 69 | 0 |
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| 1995 | 69.4 | 79 | 79.4 | 91 | 59.4 | 68 | 4.00 | 62 | 0 |
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| 1994 | 67.9 | 115 | 78.9 | 105 | 56.9 | 116 | 2.27 | 110 | 0 |
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| 1993 | 68.7 | 94 | 80.6 | 67 | 56.8 | 119 | 4.96 | 34 | 0 |
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| 1992 | 68.3 | 100 | 77.8 | 127 | 58.8 | 80 | 3.43 | 74 | 0 |
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| 1991 | 68.8 | 90 | 79.6 | 88 | 57.9 | 95 | 3.42 | 75 | 0 |
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| 1990 | 71 | 46 | 82.4 | 33 | 59.6 | 65 | 4.41 | 52 | 0 |
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| 1989 | 68.8 | 90 | 78.4 | 115 | 59.1 | 75 | 9.60 | 2 | 0 |
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| 1988 | 68.2 | 103 | 78.8 | 106 | 57.6 | 102 | 3.35 | 78 | 0 |
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| 1987 | 66 | 146 | 79.3 | 96 | 52.8 | 155 | 1.97 | 119 | 0 |
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| 1986 | 71.9 | 33 | 82.3 | 35 | 61.5 | 35 | 4.07 | 59 | 0 |
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| 1985 | 66 | 146 | 80.1 | 79 | 51.9 | 156 | 1.92 | 121 | 0 |
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| 1984 | 66 | 146 | 79.2 | 98 | 52.9 | 154 | 1.23 | 145 | 0 |
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| 1983 | 69.2 | 86 | 81.9 | 43 | 56.5 | 128 | 1.48 | 138 | 0 |
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| 1982 | 70.1 | 64 | 79.7 | 85 | 60.6 | 54 | 3.00 | 91 | 0 |
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| 1981 | 67.8 | 117 | 78 | 121 | 57.7 | 101 | 6.75 | 16 | 0 |
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| 1980 | 69.9 | 70 | 79.1 | 104 | 60.7 | 52 | 2.41 | 108 | 0 |
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| 1979 | 69.3 | 81 | 77.9 | 124 | 60.8 | 49 | 3.66 | 68 | 0 |
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| 1978 | 71.1 | 42 | 81.2 | 55 | 61 | 44 | 1.57 | 136 | 0 |
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| 1977 | 71.1 | 42 | 79.4 | 91 | 62.8 | 18 | 9.00 | 5 | 0 |
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| 1976 | 66.4 | 141 | 76.5 | 142 | 56.3 | 131 | 5.44 | 26 | 0 |
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| 1975 | 67.2 | 127 | 76.5 | 142 | 57.8 | 98 | 5.25 | 28 | 0 |
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| 1974 | 66.5 | 139 | 76.2 | 146 | 56.9 | 116 | 3.33 | 80 | 0 |
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| 1973 | 72.9 | 23 | 82.3 | 35 | 63.5 | 11 | 5.17 | 30 | 0 |
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| 1972 | 68.8 | 90 | 78.6 | 108 | 59.1 | 75 | 6.55 | 18 | 0 |
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| 1971 | 72 | 32 | 80.6 | 67 | 63.4 | 14 | 4.45 | 50 | 0 |
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| 1970 | 73 | 22 | 83.3 | 25 | 62.6 | 21 | 2.77 | 96 | 0 |
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| 1969 | 68.3 | 100 | 77.9 | 124 | 58.7 | 83 | 3.45 | 73 | 0 |
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| 1968 | 67.2 | 127 | 78.1 | 120 | 56.3 | 131 | 4.51 | 48 | 0 |
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| 1967 | 65.5 | 152 | 76.2 | 146 | 54.7 | 150 | 3.57 | 70 | 0 |
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| 1966 | 66.4 | 141 | 76.1 | 148 | 56.7 | 121 | 5.48 | 25 | 0 |
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| 1965 | 70.8 | 52 | 80.8 | 63 | 60.7 | 52 | 3.15 | 85 | 0 |
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| 1964 | 67.5 | 124 | 78.4 | 115 | 56.7 | 121 | 2.15 | 114 | 0 |
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| 1963 | 68.2 | 103 | 80.1 | 79 | 56.4 | 130 | 2.37 | 109 | 0 |
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| 1962 | 70.5 | 56 | 80.8 | 63 | 60.1 | 58 | 6.59 | 17 | 0 |
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| 1961 | 69.3 | 81 | 81.3 | 54 | 57.3 | 112 | 3.02 | 89 | 0 |
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| 1960 | 71.9 | 33 | 81.1 | 58 | 62.7 | 19 | 7.12 | 14 | 0 |
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| 1959 | 73.1 | 21 | 83.5 | 24 | 62.7 | 19 | 3.13 | 86 | 0 |
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| 1958 | 69.6 | 75 | 81 | 60 | 58.2 | 91 | 2.12 | 115 | 0 |
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| 1957 | 70.4 | 59 | 79.2 | 98 | 61.6 | 33 | 9.17 | 4 | 0 |
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| 1956 | 68.7 | 94 | 79.2 | 98 | 58.2 | 91 | 1.86 | 124 | 0 |
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| 1955 | 73.9 | 18 | 85.3 | 13 | 62.4 | 24 | 4.60 | 43 | 0 |
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| 1954 | 74.9 | 8 | 87.5 | 3 | 62.2 | 27 | 1.35 | 142 | 0 |
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| 1953 | 70.3 | 60 | 83.2 | 26 | 57.3 | 112 | 3.02 | 89 | 0 |
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| 1952 | 68 | 108 | 80.3 | 72 | 55.8 | 139 | 2.52 | 101 | 0 |
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| 1951 | 71 | 46 | 82.5 | 32 | 59.6 | 65 | 4.64 | 40 | 0 |
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| 1950 | 67.7 | 119 | 77.7 | 130 | 57.8 | 98 | 2.20 | 113 | 0 |
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| 1949 | 67.7 | 119 | 78.5 | 110 | 56.8 | 119 | 2.42 | 107 | 0 |
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| 1948 | 69.3 | 81 | 80.2 | 75 | 58.4 | 88 | 1.74 | 128 | 0 |
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| 1947 | 70.9 | 49 | 82.3 | 35 | 59.5 | 67 | 1.85 | 125 | 1 |
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| 1946 | 67.9 | 115 | 79.3 | 96 | 56.5 | 128 | 3.17 | 83 | 0 |
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| 1945 | 71.4 | 40 | 81.7 | 47 | 61.2 | 40 | 4.63 | 41 | 0 |
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| 1944 | 71.1 | 42 | 80.9 | 62 | 61.2 | 40 | 9.61 | 1 | 0 |
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| 1943 | 66.4 | 141 | 78.3 | 118 | 54.5 | 152 | 3.51 | 72 | 0 |
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| 1942 | 68 | 108 | 80.2 | 75 | 55.8 | 139 | 3.16 | 84 | 0 |
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| 1941 | 76 | 5 | 88.1 | 2 | 63.8 | 10 | 1.35 | 142 | 0 |
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| 1940 | 68 | 108 | 80.4 | 71 | 55.5 | 145 | 1.44 | 139 | 0 |
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| 1939 | 74.2 | 15 | 86.2 | 11 | 62.2 | 27 | 1.07 | 148 | 0 |
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| 1938 | 70.3 | 60 | 81.2 | 55 | 59.3 | 71 | 3.13 | 86 | 0 |
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| 1937 | 70 | 69 | 79.8 | 84 | 60.2 | 57 | 4.42 | 51 | 0 |
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| 1936 | 74.3 | 14 | 84.6 | 17 | 64.1 | 9 | 2.78 | 95 | 0 |
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| 1935 | 69.9 | 70 | 82.2 | 39 | 57.5 | 105 | 0.29 | 155 | 0 |
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| 1934 | 71.1 | 42 | 81.7 | 47 | 60.5 | 55 | 4.54 | 47 | 0 |
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| 1933 | 73.2 | 20 | 84.1 | 21 | 62.3 | 25 | 3.53 | 71 | 0 |
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| 1932 | 68.8 | 90 | 79.2 | 98 | 58.3 | 89 | 4.78 | 36 | 0 |
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| 1931 | 75.3 | 7 | 87 | 4 | 63.5 | 11 | 1.95 | 120 | 0 |
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| 1930 | 71.5 | 38 | 81.2 | 55 | 61.8 | 32 | 5.08 | 32 | 0 |
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| 1929 | 68.1 | 105 | 76.9 | 135 | 59.4 | 68 | 4.50 | 49 | 0 |
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| 1928 | 67.1 | 130 | 76.6 | 139 | 57.5 | 105 | 3.88 | 64 | 0 |
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| 1927 | 72.6 | 26 | 84.1 | 21 | 61.2 | 40 | 1.43 | 140 | 0 |
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| 1926 | 74.9 | 8 | 84.2 | 19 | 65.5 | 5 | 2.25 | 112 | 0 |
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| 1925 | 76.5 | 2 | 86.7 | 7 | 66.2 | 3 | 4.33 | 55 | 0 |
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| 1924 | 66.1 | 144 | 76.1 | 148 | 55.8 | 139 | 6.80 | 15 | 2 |
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| 1923 | 70.1 | 64 | 80.8 | 63 | 59.3 | 71 | 1.50 | 137 | 0 |
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| 1922 | 72.2 | 28 | 83.1 | 27 | 61.4 | 38 | 2.77 | 96 | 0 |
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| 1921 | 72.4 | 27 | 82.9 | 30 | 61.9 | 31 | 1.80 | 126 | 0 |
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| 1920 | 68 | 108 | 78 | 121 | 58 | 93 | 2.51 | 103 | 0 |
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| 1919 | 71.9 | 33 | 82.8 | 31 | 61 | 44 | 1.71 | 131 | 0 |
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| 1918 | 65.7 | 151 | 75.8 | 151 | 55.6 | 143 | 1.59 | 135 | 0 |
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| 1917 | 65.9 | 149 | 75.7 | 152 | 56.2 | 133 | 3.32 | 81 | 0 |
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| 1916 | 68 | 108 | 79.4 | 91 | 56.7 | 121 | 2.98 | 93 | 0 |
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| 1915 | 70.1 | 64 | 79.6 | 88 | 60.5 | 55 | 5.59 | 24 | 0 |
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| 1914 | 69.6 | 75 | 80.1 | 79 | 59.2 | 73 | 2.03 | 117 | 0 |
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| 1913 | 69.3 | 81 | 79.6 | 88 | 59 | 78 | 3.34 | 79 | 0 |
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| 1912 | 72.2 | 28 | 83 | 28 | 61.5 | 35 | 5.08 | 32 | 0 |
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| 1911 | 76.5 | 2 | 86.5 | 8 | 66.5 | 2 | 2.27 | 110 | 0 |
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| 1910 | 72.2 | 28 | 81.8 | 45 | 62.6 | 21 | 4.12 | 58 | 0 |
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| 1909 | 67.8 | 117 | 77.8 | 127 | 57.9 | 95 | 2.91 | 94 | 0 |
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| 1908 | 67.3 | 126 | 78.5 | 110 | 56.2 | 133 | 3.09 | 88 | 0 |
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| 1907 | 69 | 89 | 78.6 | 108 | 59.4 | 68 | 7.41 | 10 | 0 |
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| 1906 | 71.9 | 33 | 80.3 | 72 | 63.4 | 14 | 5.39 | 27 | 0 |
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| 1905 | 71.5 | 38 | 82.1 | 41 | 60.8 | 49 | 1.11 | 146 | 0 |
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| 1904 | 70.5 | 56 | 81.9 | 43 | 59.1 | 75 | 1.10 | 147 | 0 |
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| 1903 | 69.6 | 75 | 81.8 | 45 | 57.4 | 110 | 1.72 | 129 | 0 |
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| 1902 | 66.9 | 136 | 76.9 | 135 | 56.9 | 116 | 8.07 | 9 | 0 |
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| 1901 | 66.1 | 144 | 76.5 | 142 | 55.6 | 143 | 4.63 | 41 | 0 |
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| 1900 | 74.7 | 11 | 84.8 | 16 | 64.6 | 7 | 4.34 | 53 | 0 |
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| 1899 | 67.1 | 130 | 79.2 | 98 | 55.1 | 146 | 2.48 | 104 | 0 |
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| 1898 | 72.9 | 23 | 82.4 | 33 | 63.4 | 14 | 8.92 | 6 | 0 |
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| 1897 | 70.1 | 64 | 84.2 | 19 | 55.9 | 135 | 1.92 | 121 | 0 |
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| 1896 | 68.7 | 94 | 80.2 | 75 | 57.3 | 112 | 2.02 | 118 | 0 |
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| 1895 | 70.9 | 49 | 82.1 | 41 | 59.8 | 64 | 0.86 | 150 | 0 |
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| 1894 | 70.5 | 56 | 80.2 | 75 | 60.9 | 47 | 0.74 | 151 | 0 |
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| 1893 | 69.2 | 86 | 79.9 | 83 | 58.6 | 86 | 2.48 | 104 | 0 |
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| 1892 | 67.6 | 122 | 79.2 | 98 | 55.9 | 135 | 1.01 | 149 | 0 |
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| 1891 | 69.3 | 81 | 79.4 | 91 | 59.2 | 73 | 1.80 | 126 | 0 |
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| 1890 | 69.4 | 79 | 77.6 | 131 | 61.2 | 40 | 4.68 | 39 | 0 |
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| 1889 | 64.9 | 153 | 74.8 | 154 | 55.1 | 146 | 5.74 | 23 | 0 |
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| 1888 | 64.5 | 156 | 73.3 | 156 | 55.7 | 142 | 7.38 | 12 | 0 |
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| 1887 | 68 | 108 | 80 | 82 | 55.9 | 135 | 1.63 | 134 | 0 |
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| 1886 | 68.6 | 99 | 79.7 | 85 | 57.5 | 105 | 1.88 | 123 | 0 |
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| 1885 | 67.1 | 130 | 76.6 | 139 | 57.6 | 102 | 4.23 | 57 | 0 |
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| 1884 | 74.9 | 8 | 86.3 | 9 | 63.5 | 11 | 0.66 | 154 | 0 |
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| 1883 | 70.3 | 60 | 80.5 | 69 | 60.1 | 58 | 4.85 | 35 | 0 |
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| 1882 | 69.9 | 70 | 79.7 | 85 | 60.1 | 58 | 4.25 | 56 | 0 |
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| 1881 | 74 | 17 | 84.9 | 15 | 63.1 | 17 | 2.43 | 106 | 0 |
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| 1880 | 66.5 | 139 | 76.3 | 145 | 56.7 | 121 | 3.95 | 63 | 0 |
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| 1879 | 70.1 | 64 | 82.2 | 39 | 57.9 | 95 | 0.70 | 152 | 0 |
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| 1878 | 69.1 | 88 | 79.4 | 91 | 58.7 | 83 | 1.33 | 144 | 0 |
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| 1877 | 67 | 135 | 76 | 150 | 58 | 93 | 9.55 | 3 | 0 |
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| 1876 | 64.9 | 153 | 75.5 | 153 | 54.3 | 153 | 1.67 | 133 | 0 |
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| 1875 | 64.7 | 155 | 74.3 | 155 | 55.1 | 146 | 5.91 | 22 | 0 |
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| 1874 | 68 | 108 | 78.5 | 110 | 57.5 | 105 | 2.54 | 100 | 0 |
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| 1873 | 67.2 | 127 | 76.9 | 135 | 57.5 | 105 | 4.05 | 60 | 0 |
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| 1872 | 67.1 | 130 | 78.2 | 119 | 55.9 | 135 | 4.56 | 46 | 0 |
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| 1871 | 66.8 | 138 | 77.1 | 134 | 56.6 | 126 | 3.42 | 75 | 0 |
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