1901-2000 Inches 1 1.86 2.78 -0.92 21 109 1987 1900 1923 1929 bottom-third 2 5.00 6.08 -1.08 31 99 1980 1900 1922 1929 bottom-third 3 8.72 9.58 -0.86 46 83 1980 1900 1927 1929 normal 4 11.27 13.50 -2.23 20 109 1940 1984 1918 1929 bottom-third 1989 5 14.60 17.21 -2.61 21 108 1948 2006 1925 1929 bottom-third 6 16.61 20.91 -4.30 11 118 1948 2006 1923 1929 bottom-tenth 7 19.45 24.42 -4.97 8 121 1948 2006 1911 1929 bottom-tenth 8 21.79 28.20 -6.41 5 124 1948 2006 1911 1929 bottom-tenth 9 24.65 31.94 -7.29 2 127 1948 2006 1930 1929 bottom-tenth 10 29.15 35.34 -6.19 8 121 2002 2006 1924 1929 bottom-tenth 1924 11 33.88 38.65 -4.77 20 109 2002 2006 1922 1929 bottom-third 12 36.70 41.99 -5.29 17 112 2002 2006 1925 1929 bottom-third 18 56.05 62.87 -6.82 17 111 2002 2007 1925 1929 bottom-third 24 78.77 83.96 -5.19 28 100 1966 2007 1925 1929 bottom-third 36 124.02 125.88 -1.86 45 82 1967 2008 1927 1929 normal 48 163.47 167.88 -4.41 41 85 1968 2009 1927 1929 bottom-third 60 206.96 209.81 -2.85 49 76 1969 2010 1929 1922 normal