1901-2000 Inches 1 0.38 1.23 -0.85 11 119 1917 1911 1931 1932 bottom-tenth 1968 2 1.73 2.55 -0.82 29 101 1970 2001 1931 1932 bottom-third 3 4.05 4.04 0.01 60 69 1920 2001 1931 1932 normal 2014 4 5.74 6.16 -0.42 56 73 1977 1993 1931 1932 normal 5 8.98 8.79 0.19 68 61 1977 2019 1931 1932 normal 6 10.26 12.71 -2.45 38 91 1957 1962 1931 1932 bottom-third 7 18.45 16.46 1.99 88 41 1954 1971 1931 1932 top-third 8 23.43 20.44 2.99 96 33 1954 1962 1931 1932 top-third 9 29.95 24.99 4.96 102 27 1954 1903 1931 1932 top-third 10 33.47 29.04 4.43 97 32 1954 2011 1931 1932 top-third 11 35.27 32.38 2.89 90 39 1954 2011 1931 1932 top-third 12 36.91 34.75 2.16 85 44 1902 2011 1931 1932 normal 1981 18 58.68 47.46 11.22 117 11 1957 1994 1932 1933 top-tenth 24 78.94 69.49 9.45 109 19 1957 2011 1932 1929 top-third 36 105.99 104.12 1.87 73 54 1990 2011 1932 1930 normal 48 141.46 138.68 2.78 69 57 1957 2011 1926 1932 normal 60 184.77 173.28 11.49 88 37 1957 2012 1928 1932 top-third