1901-2000 Inches 1 6.25 5.67 0.58 87 42 1983 1916 1970 1967 top-third 2 9.81 10.25 -0.44 62 67 1990 2013 1970 1969 normal 3 15.07 14.24 0.83 84 45 1911 2013 1970 1969 normal 2016 4 18.19 17.77 0.42 72 57 1986 2003 1970 1969 normal 5 23.14 22.06 1.08 83 46 1986 2003 1970 1969 normal 6 28.12 25.89 2.23 91 38 1986 2003 1970 1965 top-third 7 32.39 29.79 2.60 94 35 1986 2003 1970 1965 top-third 8 35.03 33.49 1.54 79 49 1986 2003 1970 1965 normal 9 37.40 36.52 0.88 72 56 1911 2003 1970 1965 normal 10 42.05 39.82 2.23 79 49 2002 2003 1970 1969 normal 11 44.43 44.07 0.36 67 61 2002 2003 1970 1965 normal 12 50.72 49.34 1.38 68 60 2002 2019 1970 1965 normal 18 73.87 75.27 -1.40 51 77 2008 2019 1970 1965 normal 1925 24 96.32 98.60 -2.28 47 80 1986 2020 1970 1966 normal 36 142.81 148.04 -5.23 40 86 1942 2021 1970 1967 bottom-third 48 190.28 197.35 -7.07 31 94 1988 2021 1970 1968 bottom-third 60 234.83 246.58 -11.75 23 101 1955 2021 1970 1969 bottom-third