1901-2000 Inches 1 1.57 1.03 0.54 117 12 1939 1942 1921 1919 top-tenth 2 2.30 2.23 0.07 73 56 1933 1942 1921 1920 normal 3 2.62 3.47 -0.85 28 101 1952 2013 1921 1920 bottom-third 1968 4 4.12 4.54 -0.42 48 81 1904 1923 1921 1920 normal 1978 5 5.62 5.82 -0.20 60 69 1904 1923 1921 1919 normal 2009 6 6.79 7.66 -0.87 44 85 2012 1998 1921 1919 normal 7 9.03 9.87 -0.84 48 81 2012 1995 1921 1918 normal 8 11.42 11.65 -0.23 63 66 2012 1941 1921 1920 normal 9 12.06 12.90 -0.84 47 82 2012 1941 1921 1920 normal 10 13.34 13.86 -0.52 57 72 2012 1927,1995 1921 1920 normal 11 14.41 14.93 -0.52 56 73 2012 1927 1921 1920 normal 12 16.27 15.94 0.33 72 56 2012 1927 1921 1918 normal 18 22.72 23.59 -0.87 55 73 1934 1927 1921 1916 normal 24 30.53 31.87 -1.34 47 80 2002 1998 1921 1918 normal 1985 36 46.03 47.81 -1.78 42 84 2002 1947 1921 1917 bottom-third 48 57.91 63.72 -5.81 17 108 1934 1998 1919 1921 bottom-third 60 75.51 79.56 -4.05 37 87 1935 1999 1921 1919 bottom-third