1901-2000 Inches 1 2.23 2.16 0.07 68 61 1952 2009 2012 2012 normal 1928,2012 2 5.21 4.65 0.56 97 32 1952 2018 2012 2009 top-third 3 7.77 7.27 0.50 85 44 1952 2018 2012 2009 normal 4 11.11 10.05 1.06 109 20 1952 1941 2012 2009 top-third 5 14.45 12.97 1.48 114 15 1952 1941 2012 2009 top-third 1985,1993 6 17.80 15.88 1.92 113 16 1952 1941 2012 2009 top-third 7 20.70 18.40 2.30 119 10 1952 1941 2012 2009 top-tenth 8 22.42 20.91 1.51 98 31 1956 2019 2012 2009 top-third 9 24.44 23.04 1.40 91 38 1934 2019 2012 2009 top-third 10 26.81 25.36 1.45 98 31 1934 2019 2012 2009 top-third 11 29.69 27.70 1.99 102 26 1931 2019 2012 2010 top-third 12 31.01 29.93 1.08 86 42 1934 2019 2012 2010 top-third 1946 18 45.30 45.83 -0.53 48 80 1931 2019 2012 2011 normal 24 59.07 59.90 -0.83 47 80 1931 2019 2012 2011 normal 36 89.11 89.86 -0.75 53 73 1956 2019 2003 2012 normal 48 120.52 119.78 0.74 64 61 1956 2019 2003 2012 normal 60 152.90 149.66 3.24 83 41 1934 2019 2012 2011 top-third