1901-2000 Inches 1 8.14 4.59 3.55 117 12 2008 1967 1970 1967 top-tenth 2 11.80 8.90 2.90 104 25 1966 1919 1970 1969 top-third 3 13.60 12.54 1.06 80 49 1966 2013 1970 1969 normal 4 19.01 16.10 2.91 99 30 1964 1919 1970 1969 top-third 5 21.65 19.58 2.07 86 43 1957 1919 1970 1969 top-third 6 24.07 23.55 0.52 75 54 1930 1989 1970 1969 normal 7 29.76 26.60 3.16 94 35 1930 1958 1970 1967 top-third 8 32.44 30.09 2.35 89 40 1930 1958 1970 1967 top-third 9 35.86 33.55 2.31 86 42 1930 1958 1970 1967 top-third 10 39.49 36.62 2.87 86 42 1977 1958 1970 1967 top-third 11 42.80 39.77 3.03 86 42 1966 1958 1970 1967 top-third 12 43.82 43.36 0.46 71 57 1966 1958 1970 1967 normal 18 67.88 66.82 1.06 69 59 1966 1984 1969 1970 normal 24 86.58 86.56 0.02 61 66 1966 2004 1970 1962 normal 36 127.96 129.84 -1.88 49 77 1966 2005 1970 1962 normal 48 162.06 173.06 -11.00 15 110 1966 1939 1969 1970 bottom-third 60 213.22 216.24 -3.02 42 82 1966 1937 1970 1962 normal