1901-2000 Inches 1 0.83 4.21 -3.38 3 126 1915 2010 1915 1980 bottom-tenth 2 6.73 7.65 -0.92 51 78 2012 2010 1978 1980 normal 1989 3 7.61 11.59 -3.98 6 123 2012 2010 1957 1980 bottom-tenth 4 9.11 15.74 -6.63 1 127 1981 2010 1981 1980 lowest 5 12.97 19.90 -6.93 3 125 1985 2010 1947 1980 bottom-tenth 6 17.33 23.43 -6.10 7 121 1947 2010 1966 1980 bottom-tenth 7 18.25 27.03 -8.78 5 123 1947 2019 1966 1980 bottom-tenth 8 20.24 31.07 -10.83 2 126 1985 2019 1981 1980 bottom-tenth 9 23.90 34.31 -10.41 2 126 1966 2010 1966 1980 bottom-tenth 10 27.21 37.60 -10.39 2 126 1966 2010 1966 1980 bottom-tenth 11 28.93 41.05 -12.12 2 126 1966 2010 1966 1980 bottom-tenth 12 34.45 45.08 -10.63 2 126 1966 2010 1966 1980 bottom-tenth 18 55.24 68.51 -13.27 3 124 1966 2007 1967 1980 bottom-tenth 24 81.98 90.18 -8.20 17 110 1966 2010 1967 1980 bottom-third 36 132.39 135.38 -2.99 42 84 1967 2020 1969 1980 bottom-third 48 187.80 180.61 7.19 79 46 1967 2010 1972 1980 normal 60 229.10 225.70 3.40 59 65 1967 2010 1972 1980 normal