1901-2000 Inches 1 2.30 1.80 0.50 99 30 1993 1919 1973 1968 top-third 2 2.32 2.09 0.23 83 46 1993 1919 1973 1968 normal 3 2.34 2.43 -0.09 67 62 1963,2020 1919 1971 1973 normal 1975,2016 4 2.50 3.00 -0.50 47 82 1993 1919 1972 1973 normal 5 3.30 4.12 -0.82 40 89 2002 1912 1972 1973 bottom-third 1910 6 3.44 5.26 -1.82 19 110 2002 1905 1972 1973 bottom-third 7 5.20 6.41 -1.21 48 81 2002 1905 1972 1973 normal 8 5.25 7.59 -2.34 20 108 2002 1905 1972 1973 bottom-third 1896 9 6.13 8.44 -2.31 27 101 2002 1941 1972 1973 bottom-third 10 6.16 9.31 -3.15 16 112 2002 1941 1971 1973 bottom-third 11 6.27 10.51 -4.24 10 118 2002 1941 1956 1973 bottom-tenth 12 7.33 12.59 -5.26 4 124 2002 1941 1904 1973 bottom-tenth 18 15.36 17.86 -2.50 42 86 1900 1993 1972 1973 bottom-third 24 25.55 25.18 0.37 78 49 1900 1906 1972 1973 normal 36 36.81 37.73 -0.92 67 59 1904 1907 1972 1973 normal 48 45.36 50.23 -4.87 35 90 1902 1908 1972 1973 bottom-third 60 56.59 62.77 -6.18 32 92 1904 1909 1964 1973 bottom-third