1901-2000 Inches 1 1.57 2.53 -0.96 41 88 1952 2018 1955 1960 bottom-third 1910 2 4.94 5.46 -0.52 59 70 1952 2018 1956 1960 normal 3 6.53 7.77 -1.24 44 85 1952 1974,2018 1956 1960 normal 4 10.36 10.11 0.25 71 58 1956 1919 1957 1960 normal 5 15.86 12.97 2.89 104 25 1956 1919 1957 1960 top-third 6 17.54 16.34 1.20 83 46 2011 1919 1956 1960 normal 1967 7 18.36 18.70 -0.34 64 65 2011 1941 1956 1960 normal 8 20.03 20.36 -0.33 63 66 2011 1941 1956 1960 normal 9 22.17 21.96 0.21 67 62 2011 1941 1956 1960 normal 10 24.57 23.44 1.13 76 53 2011 1941 1956 1960 normal 11 28.43 25.21 3.22 94 34 2011 1941 1959 1960 top-third 12 29.95 27.03 2.92 90 38 2011 1941 1960 1958 top-third 18 49.62 43.44 6.18 102 26 1918 1941 1959 1960 top-third 24 59.81 54.21 5.60 94 33 1918 1942 1960 1959 top-third 36 87.66 81.38 6.28 95 31 1956 2017 1958 1960 top-third 48 120.86 108.50 12.36 108 17 1956 2018 1959 1960 top-third 60 154.53 135.53 19.00 117 7 1956 2019 1960 1945 top-tenth