1901-2000 Inches 1 3.92 3.43 0.49 91 38 1974 2005 1956 1954 top-third 2 6.11 5.75 0.36 75 54 1936 2005 1956 1954 normal 3 7.66 7.13 0.53 75 54 1936 1896 1956 1954 normal 4 7.91 7.86 0.05 66 63 1936 1896 1956 1955 normal 5 8.12 8.33 -0.21 56 73 1936 1896 1956 1955 normal 1897 6 8.42 8.82 -0.40 51 78 1936 1896 1956 1955 normal 7 8.85 9.31 -0.46 49 79 1900 1896 1956 1955 normal 1977 8 10.19 9.91 0.28 75 53 1900 1896 1956 1954 normal 1968 9 10.93 10.99 -0.06 61 67 1988 1999 1956 1954 normal 10 11.56 12.64 -1.08 39 89 1936 2011 1956 1956 bottom-third 1956 11 14.39 14.78 -0.39 54 74 1934 2011 1956 1955 normal 12 17.63 17.36 0.27 64 64 1934 2011 1956 1955 normal 1899 18 25.83 26.13 -0.30 53 75 1918 2011 1956 1955 normal 24 34.03 34.65 -0.62 45 82 1935 2011 1955 1956 normal 36 51.73 51.88 -0.15 52 74 1936 2011 1956 1955 normal 1941 48 67.83 69.08 -1.25 39 86 1937 2012 1954 1956 bottom-third 60 87.92 86.27 1.65 62 62 1937 2013 1956 1950 normal