1901-2000 Inches 1 3.42 4.39 -0.97 50 80 1927 1925 1957 1955 normal 2 6.25 8.48 -2.23 31 98 1981 1925 1956 1957 bottom-third 1931 3 12.90 11.34 1.56 87 42 1981 2019 1957 1949 top-third 4 15.87 14.10 1.77 89 40 1981 2010 1957 1949 top-third 5 23.44 17.98 5.46 111 18 1985 2010 1957 1949 top-third 6 26.50 22.89 3.61 99 30 1985 1899 1957 1949 top-third 7 31.32 28.50 2.82 95 34 1981 1899 1957 1954 top-third 8 36.46 33.04 3.42 97 32 1981 1899 1957 1954 top-third 9 42.85 36.77 6.08 110 19 1955 2019 1957 1949 top-third 10 47.41 40.60 6.81 110 19 1955 2010 1957 1949 top-third 11 52.17 45.67 6.50 106 23 1955 2010 1957 1949 top-third 12 55.14 50.23 4.91 97 32 1955 1930 1957 1954 top-third 18 74.40 73.11 1.29 66 62 1956 1949 1957 1954 normal 1971 24 101.98 100.48 1.50 69 59 1956 1930 1957 1954 normal 36 141.47 150.79 -9.32 30 97 1957 1931 1957 1954 bottom-third 48 174.29 201.00 -26.71 2 124 2003 1949 1958 1957 bottom-tenth 60 230.71 251.16 -20.45 12 113 1959 1949 1957 1954 bottom-tenth