1901-2000 Inches 1 8.87 5.96 2.91 117 12 1910 1980 1896 1897 top-tenth 1943,1951 2 13.02 10.97 2.05 94 35 2007 1961 1895 1896 top-third 3 18.71 16.26 2.45 94 35 1986 1961 1896 1897 top-third 4 20.01 21.83 -1.82 42 86 1986 1983 1897 1896 bottom-third 5 24.60 26.04 -1.44 55 73 1918 1949 1897 1896 normal 6 28.04 29.00 -0.96 57 71 1918 1983 1897 1896 normal 7 29.75 32.43 -2.68 44 84 1918 1949 1897 1896 normal 8 33.19 36.36 -3.17 39 89 1918 1949 1897 1896 bottom-third 9 35.55 41.38 -5.83 25 103 1904 1983 1897 1896 bottom-third 10 40.75 45.55 -4.80 30 98 1918 1990 1897 1896 bottom-third 11 42.75 50.31 -7.56 20 108 1918 1990 1897 1896 bottom-third 12 46.55 55.63 -9.08 18 110 1904 2020 1897 1896 bottom-third 18 75.35 84.69 -9.34 26 101 1918 1984 1897 1897 bottom-third 24 99.20 111.28 -12.08 20 107 1905 1984 1897 1897 bottom-third 36 -99 166.96 -99 -99 -99 1955 2020 normal 48 -99 222.40 -99 -99 -99 1955 1976 normal 60 -99 277.73 -99 -99 -99 1956 2022 normal