1901-2000 Inches 1 1.40 2.33 -0.93 30 99 1980 2007 1947 1950 bottom-third 2 4.55 5.20 -0.65 48 81 2011 2007 1948 1950 normal 3 7.91 8.57 -0.66 54 75 1998 2007 1948 1950 normal 4 8.95 10.92 -1.97 31 98 1998 2015 1937 1950 bottom-third 5 10.81 12.59 -1.78 40 89 2011 2007 1948 1950 bottom-third 6 12.11 14.18 -2.07 36 93 2011 1941 1947 1950 bottom-third 7 13.06 15.67 -2.61 32 97 2011 2007 1943 1950 bottom-third 8 13.30 17.44 -4.14 21 107 2011 2007 1925 1950 bottom-third 9 13.62 19.26 -5.64 12 116 2011 1941 1925 1950 bottom-tenth 10 14.12 21.77 -7.65 9 119 2011 1941 1925 1950 bottom-tenth 11 17.96 24.74 -6.78 11 117 2011 1992 1925 1950 bottom-tenth 12 20.09 27.08 -6.99 8 120 2011 1992 1925 1950 bottom-tenth 18 36.09 41.32 -5.23 28 100 1918 2016 1948 1950 bottom-third 24 50.00 54.27 -4.27 35 92 1918 1992 1940 1950 bottom-third 36 77.32 81.37 -4.05 37 89 1918 2017 1940 1950 bottom-third 48 100.05 108.49 -8.44 24 101 1956 1975 1940 1950 bottom-third 60 128.80 135.50 -6.70 28 96 1956 2019 1940 1950 bottom-third