1901-2000 Inches 1 3.46 3.47 -0.01 75 54 1897 1926 1943 1936 normal 2 8.22 7.14 1.08 101 28 1897 1926 1943 1934 top-third 3 10.28 11.14 -0.86 40 89 1953 1926 1943 1942 bottom-third 4 12.76 15.39 -2.63 18 111 1953 1915 1940 1943 bottom-third 5 16.76 19.66 -2.90 20 109 1930 1915 1940 1943 bottom-third 6 22.36 23.57 -1.21 41 88 1930 2011 1941 1943 bottom-third 7 27.22 27.38 -0.16 54 75 1930 1945 1941 1943 normal 8 31.24 30.05 1.19 74 55 1930 1945 1943 1942 normal 9 32.43 33.10 -0.67 48 81 1930 1950 1943 1942 normal 1969 10 34.30 36.19 -1.89 31 97 1930 1950 1941 1943 bottom-third 11 35.90 39.33 -3.43 25 103 1930 2019 1941 1943 bottom-third 12 38.06 42.25 -4.19 18 110 1925 2019 1941 1943 bottom-third 18 62.65 65.79 -3.14 28 100 1931 2019 1941 1943 bottom-third 24 81.36 84.47 -3.11 35 92 1941 2020 1942 1943 bottom-third 1956 36 126.20 126.72 -0.52 51 75 1941 2020 1943 1939 normal 48 159.68 168.99 -9.31 17 108 1956 2021 1943 1940 bottom-third 60 193.34 211.21 -17.87 6 118 1956 2020 1934 1943 bottom-tenth