Every May in Greenville, MS from 1903 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 | 72.4 | 59 | 82.1 | 79 | 62.7 | 36 | 2.04 | 93 | 0 |
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| 2025 | 72.6 | 56 | 81.6 | 88 | 63.6 | 26 | 7.28 | 19 | 0 |
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| 2024 | 78.5 | 1 | 87.7 | 3 | 69.4 | 1 | 5.20 | 47 | 0 |
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| 2023 | 73 | 49 | 83.7 | 51 | 62.4 | 42 | 2.70 | 84 | 0 |
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| 2022 | 76.9 | 2 | 87.2 | 7 | 66.7 | 3 | 4.37 | 59 | 1 |
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| 2021 | 70.7 | 86 | 80.5 | 101 | 60.8 | 73 | 4.82 | 54 | 0 |
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| 2020 | 72 | 64 | 82.7 | 71 | 61.4 | 65 | 1.83 | 98 | 0 |
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| 2019 | 74.9 | 15 | 84 | 48 | 65.8 | 10 | 12.98 | 2 | 0 |
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| 2018 | 76.9 | 2 | 87.6 | 5 | 66.2 | 6 | 1.52 | 106 | 0 |
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| 2017 | 70.6 | 88 | 81.1 | 97 | 60.2 | 81 | 1.69 | 102 | 0 |
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| 2016 | 71.5 | 74 | 81.8 | 86 | 61.3 | 67 | 1.73 | 101 | 0 |
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| 2015 | 73.7 | 33 | 83.5 | 55 | 63.8 | 22 | 4.63 | 58 | 0 |
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| 2014 | 71.5 | 74 | 81.6 | 88 | 61.5 | 61 | 5.25 | 45 | 0 |
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| 2013 | 69.6 | 106 | 79.6 | 111 | 59.7 | 90 | 4.37 | 59 | 0 |
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| 2012 | 75.6 | 11 | 87.2 | 7 | 64 | 20 | 3.04 | 77 | 0 |
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| 2011 | 70.6 | 88 | 82 | 82 | 59.3 | 95 | 1.34 | 110 | 0 |
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| 2010 | 74.6 | 17 | 84.9 | 32 | 64.3 | 18 | 2.71 | 83 | 0 |
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| 2009 | 71.1 | 83 | 79.5 | 112 | 62.7 | 36 | 10.39 | 6 | 0 |
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| 2008 | 72 | 64 | 82.2 | 76 | 61.9 | 55 | 6.16 | 31 | 0 |
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| 2007 | 74.6 | 17 | 85.7 | 19 | 63.6 | 26 | 1.40 | 109 | 1 |
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| 2006 | 72.6 | 56 | 83.1 | 64 | 62.1 | 52 | 3.37 | 74 | 0 |
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| 2005 | 70.6 | 88 | 81.9 | 83 | 59.3 | 95 | 2.00 | 95 | 0 |
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| 2004 | 73.1 | 48 | 82.2 | 76 | 64.1 | 19 | 5.54 | 42 | 0 |
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| 2003 | 73.4 | 39 | 83.2 | 59 | 63.6 | 26 | 2.37 | 91 | 0 |
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| 2002 | 71.2 | 82 | 82.1 | 79 | 60.4 | 78 | 1.79 | 99 | 0 |
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| 2001 | 73.9 | 28 | 84.8 | 34 | 63.1 | 33 | 2.00 | 95 | 0 |
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| 2000 | | | 84.1 | 46 | | | 5.70 | 41 | 5 |
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| 1999 | 73.9 | 28 | 84.6 | 35 | 63.2 | 31 | 5.09 | 48 | 0 |
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| 1998 | 75.9 | 9 | 86.4 | 12 | 65.4 | 11 | 6.04 | 35 | 3 |
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| 1997 | 68.4 | 114 | 77.9 | 118 | 58.7 | 103 | 6.61 | 23 | 1 |
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| 1996 | 76.7 | 6 | 86.2 | 15 | 67.2 | 2 | 1.67 | 103 | 0 |
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| 1995 | 73.2 | 47 | 83.5 | 55 | 63 | 34 | 2.62 | 88 | 0 |
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| 1994 | 69.7 | 104 | 79.7 | 108 | 59.6 | 92 | 5.73 | 40 | 0 |
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| 1993 | 70.3 | 95 | 79.5 | 112 | 61.1 | 70 | 5.08 | 49 | 0 |
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| 1992 | 70.4 | 93 | 81.9 | 83 | 59 | 98 | 2.64 | 87 | 1 |
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| 1991 | 74.1 | 23 | 82.3 | 75 | 65.9 | 9 | 6.07 | 34 | 0 |
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| 1990 | 69.9 | 102 | 79.7 | 108 | 60 | 87 | 5.74 | 39 | 3 |
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| 1989 | 70 | 101 | 79.7 | 108 | 60.3 | 80 | 5.04 | 50 | 0 |
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| 1988 | | | | | 58.8 | 101 | 0.56 | 122 | 4 |
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| 1987 | 76.8 | 5 | 87 | 9 | 66.7 | 3 | 5.89 | 36 | 0 |
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| 1985 | 73.5 | 37 | 85.3 | 28 | 62.3 | 46 | 0.74 | 119 | 3 |
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| 1984 | 71.3 | 78 | 83.1 | 64 | 59.8 | 89 | 5.78 | 38 | 3 |
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| 1983 | 69.8 | 103 | 80.7 | 99 | 58.5 | 107 | 9.15 | 8 | 2 |
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| 1982 | | | 87.3 | 6 | | | 0.57 | 121 | 6 |
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| 1981 | 71.5 | 74 | 83.4 | 57 | 59.7 | 90 | 4.91 | 52 | 0 |
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| 1980 | 73 | 49 | 83.9 | 50 | 62.2 | 48 | 6.24 | 29 | 0 |
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| 1979 | 72 | 64 | 82.5 | 72 | 61.5 | 61 | 8.91 | 10 | 0 |
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| 1978 | 73.3 | 41 | 84.3 | 43 | 62.4 | 42 | 12.62 | 3 | 0 |
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| 1977 | 76.9 | 2 | 89.3 | 1 | 64.5 | 16 | 1.49 | 107 | 0 |
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| 1976 | 68.4 | 114 | 80.4 | 104 | 56.4 | 119 | 4.75 | 56 | 0 |
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| 1975 | 74.4 | 20 | 84.2 | 45 | 64.6 | 15 | 12.48 | 4 | 0 |
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| 1974 | 75.3 | 12 | 86.8 | 11 | 63.8 | 22 | 7.69 | 15 | 0 |
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| 1973 | 71.3 | 78 | 82.5 | 72 | 60.1 | 85 | 3.73 | 67 | 0 |
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| 1972 | 73.5 | 37 | 85 | 29 | 61.9 | 55 | 2.34 | 92 | 0 |
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| 1971 | 69.7 | 104 | 81.6 | 88 | 57.8 | 111 | 7.07 | 20 | 0 |
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| 1970 | 74.1 | 23 | 86.2 | 15 | 61.8 | 58 | 3.96 | 66 | 2 |
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| 1969 | 72.3 | 60 | 83.6 | 53 | 61 | 71 | 3.54 | 71 | 0 |
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| 1968 | 70.7 | 86 | 81.5 | 92 | 59.9 | 88 | 6.23 | 30 | 0 |
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| 1967 | 70.4 | 93 | 82.1 | 79 | 58.6 | 105 | 6.77 | 22 | 0 |
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| 1966 | 71.3 | 78 | 84.3 | 43 | 58.3 | 109 | 3.51 | 72 | 0 |
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| 1965 | 73.9 | 28 | 85.7 | 19 | 62.2 | 48 | 3.59 | 69 | 0 |
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| 1964 | 73.3 | 41 | 84.5 | 38 | 62.2 | 48 | 2.62 | 88 | 0 |
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| 1963 | 73.7 | 33 | 85.5 | 25 | 62 | 54 | 2.86 | 79 | 0 |
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| 1962 | 76.4 | 7 | 88 | 2 | 64.8 | 13 | 4.35 | 61 | 0 |
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| 1961 | 70.1 | 98 | 81.6 | 88 | 58.7 | 103 | 3.00 | 78 | 1 |
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| 1960 | 69.6 | 106 | 81.4 | 93 | 57.7 | 113 | 4.71 | 57 | 0 |
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| 1958 | 70.5 | 91 | 82.2 | 76 | 58.8 | 101 | 9.60 | 7 | 0 |
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| 1957 | 72.5 | 58 | 83.6 | 53 | 61.4 | 65 | 7.61 | 16 | 0 |
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| 1956 | 75.1 | 14 | 86.4 | 12 | 63.7 | 25 | 1.74 | 100 | 0 |
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| 1955 | 74.8 | 16 | 85.8 | 18 | 63.9 | 21 | 6.38 | 27 | 0 |
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| 1954 | 67.6 | 116 | 78 | 117 | 57.3 | 116 | 11.67 | 5 | 0 |
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| 1953 | 73.9 | 28 | 84.6 | 35 | 63.2 | 31 | 9.06 | 9 | 1 |
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| 1952 | 72.7 | 54 | 82.9 | 69 | 62.5 | 39 | 1.98 | 97 | 1 |
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| 1951 | 72.2 | 62 | 83.2 | 59 | 61.2 | 68 | 0.74 | 119 | 0 |
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| 1950 | | | | | 65.1 | 12 | 2.84 | 81 | 9 |
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| 1949 | 73.3 | 41 | 84.5 | 38 | 62.2 | 48 | 5.37 | 43 | 0 |
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| 1948 | 72.3 | 60 | 84.1 | 46 | 60.4 | 78 | 1.47 | 108 | 0 |
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| 1947 | 70.1 | 98 | 81.4 | 93 | 58.9 | 100 | 4.93 | 51 | 0 |
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| 1946 | 70.3 | 95 | 79.5 | 112 | 61.2 | 68 | 4.09 | 64 | 0 |
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| 1945 | 69.6 | 106 | 80.5 | 101 | 58.6 | 105 | 3.55 | 70 | 0 |
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| 1944 | 73.3 | 41 | 84 | 48 | 62.5 | 39 | 4.89 | 53 | 0 |
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| 1943 | 75.9 | 9 | 87 | 9 | 64.8 | 13 | 6.46 | 25 | 0 |
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| 1942 | 71.7 | 70 | 82.8 | 70 | 60.6 | 75 | 3.08 | 76 | 0 |
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| 1941 | 74.5 | 19 | 86.2 | 15 | 62.9 | 35 | 0.78 | 118 | 0 |
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| 1940 | 70.1 | 98 | 81.8 | 86 | 58.4 | 108 | 2.86 | 79 | 0 |
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| 1939 | 73 | 49 | 84.5 | 38 | 61.5 | 61 | 4.79 | 55 | 0 |
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| 1938 | 74 | 26 | 85.6 | 21 | 62.5 | 39 | 1.15 | 114 | 0 |
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| 1937 | 73.6 | 35 | 85.6 | 21 | 61.7 | 60 | 1.61 | 104 | 0 |
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| 1936 | 73.4 | 39 | 84.9 | 32 | 61.9 | 55 | 1.16 | 113 | 0 |
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| 1935 | 71.4 | 77 | 81.9 | 83 | 60.8 | 73 | 4.08 | 65 | 0 |
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| 1934 | 73.6 | 35 | 85.5 | 25 | 61.8 | 58 | 3.21 | 75 | 0 |
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| 1933 | 76.1 | 8 | 85.6 | 21 | 66.6 | 5 | 3.61 | 68 | 0 |
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| 1932 | 71.9 | 67 | 83.2 | 59 | 60.6 | 75 | 1.55 | 105 | 0 |
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| 1931 | 68.9 | 112 | 80.3 | 106 | 57.5 | 115 | 3.42 | 73 | 0 |
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| 1930 | 73.3 | 41 | 83.1 | 64 | 63.5 | 29 | 18.04 | 1 | 0 |
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| 1929 | 72.9 | 52 | 83.3 | 58 | 62.4 | 42 | 2.67 | 85 | 0 |
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| 1928 | 70.5 | 91 | 80 | 107 | 61 | 71 | 1.12 | 115 | 0 |
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| 1927 | 71.7 | 70 | 77.2 | 120 | 66.2 | 6 | 4.17 | 63 | 0 |
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| 1926 | 71.9 | 67 | 84.5 | 38 | 59.2 | 97 | 4.32 | 62 | 0 |
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| 1925 | 71.3 | 78 | 85 | 29 | 57.6 | 114 | 2.80 | 82 | 0 |
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| 1924 | 68.7 | 113 | 80.9 | 98 | 56.5 | 118 | 5.22 | 46 | 1 |
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| 1923 | 69.6 | 106 | 78.8 | 116 | 60.5 | 77 | 7.85 | 14 | 0 |
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| 1922 | 73.3 | 41 | 83.2 | 59 | 63.5 | 29 | 7.29 | 18 | 0 |
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| 1921 | 72.1 | 63 | 84.6 | 35 | 59.6 | 92 | 2.04 | 93 | 0 |
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| 1920 | 74.1 | 23 | 83.7 | 51 | 64.4 | 17 | 8.72 | 11 | 0 |
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| 1919 | 70.3 | 95 | 80.4 | 104 | 60.2 | 81 | 7.87 | 13 | 0 |
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| 1918 | 73.9 | 28 | 86.4 | 12 | 61.5 | 61 | 0.95 | 117 | 0 |
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| 1917 | 67 | 118 | 79.3 | 115 | 54.9 | 120 | 1.09 | 116 | 1 |
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| 1916 | 74.3 | 22 | 85.5 | 25 | 62.7 | 36 | 6.29 | 28 | 1 |
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| 1915 | 74.4 | 20 | 85 | 29 | 63.8 | 22 | 6.80 | 21 | 1 |
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| 1914 | 72.9 | 52 | 85.6 | 21 | 60.1 | 85 | 5.30 | 44 | 2 |
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| 1913 | 71.7 | 70 | 83.1 | 64 | 60.2 | 81 | 2.66 | 86 | 0 |
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| 1912 | 72.7 | 54 | 83.1 | 64 | 62.3 | 46 | 6.08 | 32 | 0 |
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| 1911 | 74 | 26 | 87.7 | 3 | 60.2 | 81 | 1.21 | 112 | 0 |
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| 1910 | 69.2 | 111 | 80.6 | 100 | 57.8 | 111 | 6.08 | 32 | 0 |
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| 1909 | 69.5 | 110 | 80.5 | 101 | 58.1 | 110 | 8.69 | 12 | 1 |
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| 1908 | 71.8 | 69 | 81.3 | 96 | 62.4 | 42 | 5.83 | 37 | 0 |
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| 1907 | 67.2 | 117 | 77.3 | 119 | 56.7 | 117 | 7.55 | 17 | 1 |
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| 1906 | 70.9 | 85 | 82.4 | 74 | 59.4 | 94 | 6.49 | 24 | 2 |
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| 1905 | 75.3 | 12 | 84.5 | 38 | 66.1 | 8 | 6.45 | 26 | 0 |
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| 1904 | 71.1 | 83 | 83.2 | 59 | 59 | 98 | 1.33 | 111 | 0 |
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| 1903 | 71.7 | 70 | 81.4 | 93 | 62.1 | 52 | 2.41 | 90 | 0 |
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