1901-2000 Inches 1 2.93 3.02 -0.09 68 62 1967 1928 2012 2015 normal 1909 2 6.36 6.71 -0.35 66 64 1967 1959 2015 2014 normal 1979 3 9.61 9.85 -0.24 67 63 1938 1983 2015 2014 normal 4 15.66 12.82 2.84 98 32 1898 1983 2015 2014 top-third 1897 5 19.15 15.55 3.60 98 31 1911 1998 2015 2014 top-third 6 22.95 17.86 5.09 109 20 1907 1998 2015 2014 top-third 7 24.79 21.74 3.05 95 34 1907 1998 2015 2014 top-third 8 31.46 28.24 3.22 93 36 1907 1948 2015 2010 top-third 9 39.90 35.41 4.49 104 25 1985 1948 2015 2005 top-third 10 47.73 42.82 4.91 105 24 1932 1899 2015 2014 top-third 11 53.78 49.73 4.05 94 35 1932 1948 2015 2014 top-third 12 56.17 53.75 2.42 78 51 1932 1948 2015 2014 normal 18 75.36 71.72 3.64 90 38 2001 1960 2013 2015 top-third 24 109.73 107.55 2.18 77 51 2012 1948 2013 2015 normal 36 173.39 161.55 11.84 114 13 1957 1960 2014 2015 top-tenth 1959 48 230.98 215.36 15.62 113 13 2002 1961 2015 2005 top-tenth 60 273.99 269.21 4.78 83 42 1918 1950 2015 2006 normal