1901-2000 Inches 1 2.50 2.16 0.34 90 39 1952 2009 1897 1898 top-third 2 4.83 4.65 0.18 76 53 1952 2018 1897 1896 normal 1927,1967,1995 3 7.89 7.27 0.62 92 37 1952 2018 1897 1898 top-third 1973 4 10.77 10.05 0.72 95 34 1952 1941 1897 1898 top-third 5 13.84 12.97 0.87 92 37 1952 1941 1897 1898 top-third 1971 6 17.07 15.88 1.19 98 31 1952 1941 1897 1898 top-third 7 19.09 18.40 0.69 82 47 1952 1941 1897 1898 normal 8 21.51 20.91 0.60 76 53 1956 2019 1897 1898 normal 9 23.16 23.04 0.12 62 67 1934 2019 1897 1898 normal 10 25.59 25.36 0.23 65 64 1934 2019 1897 1898 normal 11 28.15 27.70 0.45 71 57 1931 2019 1897 1898 normal 12 30.44 29.93 0.51 68 60 1934 2019 1897 1898 normal 18 44.07 45.83 -1.76 33 95 1931 2019 1896 1897 bottom-third 24 59.86 59.90 -0.04 57 70 1931 2019 1897 1898 normal 36 89.88 89.86 0.02 60 66 1956 2019 1898 1898 normal 48 -99 119.78 -99 -99 -99 1956 2019 normal 60 -99 149.66 -99 -99 -99 1934 2019 normal