1901-2000 Inches 1 1.01 1.75 -0.74 35 94 1976 1931 1904 1906 bottom-third 2 2.55 4.04 -1.49 28 101 1910 1931 1904 1906 bottom-third 2010 3 5.41 7.71 -2.30 25 104 1953 1931 1904 1906 bottom-third 4 9.77 11.55 -1.78 38 91 1976 2018 1904 1906 bottom-third 5 16.87 15.41 1.46 87 42 1976 1993 1906 1905 top-third 6 22.13 20.04 2.09 90 39 1976 1993 1906 1902 top-third 7 25.72 24.09 1.63 80 49 1976 1993 1906 1905 normal 8 27.02 27.03 -0.01 62 67 1910 1993 1906 1905 normal 9 28.36 28.99 -0.63 58 71 1910 1993 1906 1905 normal 10 29.09 30.00 -0.91 56 73 1910 1993 1906 1905 normal 11 30.62 30.98 -0.36 63 66 1910 1993 1906 1905 normal 12 32.07 32.08 -0.01 65 63 1910 1993 1906 1905 normal 18 51.14 52.18 -1.04 58 70 1956 2019 1904 1906 normal 24 62.66 64.24 -1.58 55 72 1956 2019 1901 1906 normal 36 99.62 96.35 3.27 75 51 1957 2010 1906 1905 normal 48 126.59 128.38 -1.79 49 76 1958 2010 1901 1906 normal 60 163.77 160.36 3.41 70 54 1956 2010 1902 1906 normal