1901-2000 Inches 1 3.48 3.21 0.27 78 52 1910 1973 2011 2012 normal 2 6.67 5.23 1.44 101 29 1941 2008 2012 2011 top-third 3 10.00 7.32 2.68 112 18 1936 1897 2012 2008 top-third 4 11.68 9.63 2.05 105 24 1936 1898 2012 2008 top-third 5 13.25 12.54 0.71 78 51 1956 1973 2011 2012 normal 6 16.42 15.74 0.68 69 60 1918 1985 2011 2012 normal 1961 7 21.32 19.86 1.46 81 48 1918 1985 2012 2010 normal 1983 8 23.76 23.58 0.18 66 63 1954 1927 2011 2012 normal 9 25.46 27.29 -1.83 41 88 1954 1994 2006 2012 bottom-third 10 27.36 31.89 -4.53 22 107 1954 1994 2003 2012 bottom-third 11 29.52 36.54 -7.02 14 115 1954 2020 2000 2012 bottom-third 12 33.26 40.53 -7.27 13 116 1954 2020 1981 2012 bottom-tenth 18 51.70 56.29 -4.59 29 99 1954 1974 2007 2012 bottom-third 24 78.72 81.09 -2.37 41 87 1954 2010 2007 2012 bottom-third 36 124.10 121.65 2.45 70 57 1956 2011 2008 2012 normal 48 176.26 162.20 14.06 96 30 1956 2012 2009 2012 top-third 60 226.31 202.78 23.53 113 12 1957 2020 2010 2012 top-tenth