1901-2000 Inches 1 2.30 2.51 -0.21 45 85 1910 1973 2004 2009 normal 2 4.31 4.64 -0.33 41 89 1910 1998 2009 2008 bottom-third 1970,1974 3 6.93 6.96 -0.03 69 61 1910 1998 2009 2008 normal 4 10.01 9.30 0.71 102 27 1981 1983,1998 2009 2008 top-third 5 11.64 11.53 0.11 76 53 1977 1983 2009 2005 normal 6 15.93 13.70 2.23 118 11 1918 1983 2009 1998 top-tenth 7 18.47 16.19 2.28 117 12 1918 2019 2009 2005 top-tenth 8 21.16 18.82 2.34 114 15 1918 2019 2009 2005 top-third 9 24.23 21.60 2.63 116 13 1918 2019 2009 2005 top-tenth 10 27.24 24.53 2.71 119 10 1918 2019 2009 2005 top-tenth 11 30.55 27.43 3.12 117 12 1918 2019 2009 2005 top-tenth 12 33.38 29.96 3.42 117 12 1918 2016 2009 2005 top-tenth 18 46.20 43.68 2.52 98 30 1918 2020 2009 2005 top-third 24 63.27 59.92 3.35 99 29 1955 2020 2009 2006 top-third 36 93.36 89.87 3.49 95 32 1955 2020 2009 2006 top-third 48 123.03 119.76 3.27 89 37 1957 2019 2009 2008 top-third 60 152.45 149.62 2.83 77 48 1957 2020 2006 2009 normal