1901-2000 Inches 1 2.81 2.16 0.65 109 20 1952 2009 1983 1985 top-third 2 6.40 4.65 1.75 125 4 1952 2018 1985 1941 top-tenth 3 9.22 7.27 1.95 125 4 1952 2018 1985 1941 top-tenth 4 11.97 10.05 1.92 122 7 1952 1941 1985 1959 top-tenth 5 15.00 12.97 2.03 123 6 1952 1941 1985 1941 top-tenth 6 17.95 15.88 2.07 118 11 1952 1941 1985 1981 top-tenth 7 20.19 18.40 1.79 111 18 1952 1941 1985 1973 top-third 8 22.17 20.91 1.26 94 35 1956 2019 1985 1984 top-third 9 24.99 23.04 1.95 110 19 1934 2019 1985 1983 top-third 10 26.44 25.36 1.08 90 39 1934 2019 1985 1983 top-third 11 27.90 27.70 0.20 67 61 1931 2019 1985 1984 normal 12 31.44 29.93 1.51 94 34 1934 2019 1985 1984 top-third 18 48.44 45.83 2.61 97 31 1931 2019 1985 1984 top-third 24 61.75 59.90 1.85 86 41 1931 2019 1982 1985 top-third 36 95.17 89.86 5.31 110 16 1956 2019 1983 1985 top-third 48 129.32 119.78 9.54 114 11 1956 2019 1984 1985 top-tenth 60 160.85 149.66 11.19 115 9 1934 2019 1985 1986 top-tenth