1901-2000 Inches 1 4.35 4.19 0.16 69 60 1909 2018 1951 1950 normal 2 6.40 8.36 -1.96 16 113 1966 1972 1909 1951 bottom-third 3 12.20 12.28 -0.08 56 73 1966 1989 1949 1951 normal 1906,1941 4 17.60 15.93 1.67 91 38 1965 1972 1951 1948 top-third 5 21.90 19.42 2.48 104 25 1966 1972 1951 1948 top-third 6 24.26 22.02 2.24 96 33 1965 2018 1950 1951 top-third 7 28.91 25.07 3.84 111 18 1991 2018 1951 1948 top-third 8 33.61 28.17 5.44 114 14 1966 2019 1951 1928 top-third 9 38.52 31.37 7.15 120 8 1966 2019 1951 1928 top-tenth 10 40.62 34.55 6.07 115 13 1934 2019 1950 1951 top-tenth 11 43.45 38.11 5.34 111 17 1965 2019 1950 1951 top-third 12 45.21 41.98 3.23 91 37 1965 2019 1950 1951 top-third 1953 18 69.66 63.96 5.70 104 24 1966 2019 1950 1951 top-third 24 93.75 83.89 9.86 113 14 1966 2019 1951 1928 top-third 36 135.81 125.92 9.89 100 26 1966 2019 1951 1929 top-third 48 176.44 167.89 8.55 90 35 1966 2020 1951 1948 top-third 60 218.71 209.81 8.90 86 38 1966 2021 1951 1947 top-third