1901-2000 Inches 1 3.26 2.91 0.35 99 30 1934 2019 1988 1983 top-third 1953 2 5.05 5.43 -0.38 40 89 1934 1957 1988 1986 bottom-third 3 7.96 7.94 0.02 66 63 1925 1957,1991 1988 1984 normal 1896,2018 4 9.97 10.07 -0.10 64 65 1925 2019 1988 1986 normal 5 12.02 12.39 -0.37 56 73 1934 2019 1988 1984 normal 1959 6 13.71 14.73 -1.02 32 96 1931 2019 1988 1987 bottom-third 2021 7 16.88 16.96 -0.08 63 65 1934 1983 1988 1984 normal 8 18.31 19.13 -0.82 37 91 1934 2019 1988 1987 bottom-third 1896 9 21.12 21.62 -0.50 49 79 1934 2019 1988 1987 normal 10 23.69 24.25 -0.56 47 81 1918 2019 1988 1987 normal 11 26.39 27.03 -0.64 40 88 1931 2019 1988 1987 bottom-third 12 28.00 29.95 -1.95 22 106 1934 2019 1988 1987 bottom-third 18 40.79 44.70 -3.91 12 115 1931 2019 1977 1988 bottom-tenth 24 55.06 59.92 -4.86 13 114 1931 2020 1964 1988 bottom-tenth 36 86.87 89.88 -3.01 30 96 1955 2019 1968 1988 bottom-third 48 117.76 119.78 -2.02 44 81 1956 2019 1969 1988 normal 60 147.37 149.64 -2.27 40 84 1957 2020 1968 1988 bottom-third