1901-2000 Inches 1 1.95 4.06 -2.11 11 118 1965 1990 1925 1937 bottom-tenth 2 5.76 7.63 -1.87 31 98 1976 1978 1937 1936 bottom-third 3 6.27 10.42 -4.15 11 118 1963 1919 1930 1937 bottom-tenth 4 9.75 13.65 -3.90 16 113 1963 2018 1930 1937 bottom-third 5 14.58 17.39 -2.81 33 96 1953 2018 1930 1937 bottom-third 1913 6 21.54 21.73 -0.19 59 70 1953 1979 1937 1936 normal 7 25.72 25.98 -0.26 60 69 1930 2018 1937 1935 normal 8 31.37 30.32 1.05 71 58 1930 2018 1937 1935 normal 9 34.41 34.42 -0.01 60 69 1930 2011 1937 1935 normal 10 40.73 39.13 1.60 72 57 1930 2011 1937 1935 normal 11 43.18 42.74 0.44 58 71 1930 2011 1937 1935 normal 12 46.98 46.94 0.04 58 71 1930 2011 1936 1937 normal 18 65.15 68.70 -3.55 36 92 1930 1979 1936 1937 bottom-third 24 97.42 93.88 3.54 72 56 1931 2019 1937 1936 normal 36 136.65 140.90 -4.25 40 87 1954 2020 1936 1937 bottom-third 48 195.03 187.95 7.08 83 43 1904 2021 1937 1935 normal 1958 60 233.89 235.00 -1.11 46 79 1944 2021 1934 1937 normal