1901-2000 Inches 1 2.67 2.51 0.16 87 43 1910 1973 1986 1984 top-third 1946 2 5.00 4.64 0.36 99 31 1910 1998 1986 1983 top-third 1939 3 7.17 6.96 0.21 78 52 1910 1998 1986 1983 normal 4 9.17 9.30 -0.13 60 69 1981 1983,1998 1986 1984 normal 5 12.11 11.53 0.58 89 40 1977 1983 1986 1984 top-third 6 14.92 13.70 1.22 100 29 1918 1983 1986 1985 top-third 1999 7 18.51 16.19 2.32 119 10 1918 2019 1986 1983 top-tenth 8 21.33 18.82 2.51 117 12 1918 2019 1986 1983 top-tenth 9 24.08 21.60 2.48 115 14 1918 2019 1986 1983 top-third 10 27.11 24.53 2.58 114 15 1918 2019 1986 1983 top-third 1907 11 30.06 27.43 2.63 113 16 1918 2019 1986 1983 top-third 12 32.30 29.96 2.34 109 20 1918 2016 1986 1984 top-third 18 46.73 43.68 3.05 106 22 1918 2020 1986 1985 top-third 24 62.52 59.92 2.60 95 33 1955 2020 1986 1985 top-third 36 93.71 89.87 3.84 97 30 1955 2020 1983 1986 top-third 48 126.22 119.76 6.46 106 20 1957 2019 1984 1986 top-third 60 160.96 149.62 11.34 117 8 1957 2020 1986 1987 top-tenth