1901-2000 Inches 1 2.24 2.35 -0.11 52 77 1930 2015 1919 1920 normal 1955 2 4.65 4.58 0.07 67 62 1976 2015 1919 1920 normal 3 6.11 6.74 -0.63 33 96 1917 2015 1917 1920 bottom-third 4 8.68 9.23 -0.55 39 90 1939 2018 1917 1920 bottom-third 1978 5 11.28 11.85 -0.57 37 92 1917 2018 1917 1920 bottom-third 6 14.14 14.62 -0.48 41 88 1917 2018 1917 1920 bottom-third 1958 7 17.04 17.55 -0.51 44 85 1917 2018 1917 1920 normal 8 19.59 20.46 -0.87 32 97 1917 2015 1917 1920 bottom-third 1962 9 22.38 22.98 -0.60 41 88 1956 2015 1917 1920 bottom-third 1914 10 24.90 25.49 -0.59 39 90 1956 2015 1918 1920 bottom-third 11 26.67 27.62 -0.95 34 95 1910 2018 1918 1920 bottom-third 12 28.78 29.94 -1.16 32 97 1910 1973 1918 1920 bottom-third 1918 18 44.50 44.58 -0.08 56 72 1954 2019 1918 1920 normal 24 60.08 59.90 0.18 64 64 1931 2019 1918 1920 normal 36 91.84 89.86 1.98 84 43 1956 2019 1920 1920 normal 1920 48 120.62 119.78 0.84 65 61 1956 2019 1920 1916 normal 60 145.97 149.68 -3.71 29 96 1956 2019 1918 1920 bottom-third