1901-2000 Inches 1 2.73 2.52 0.21 88 42 1987 1957 1934 1929 top-third 1914 2 5.47 5.03 0.44 99 31 1910 1973 1934 1929 top-third 3 7.17 7.16 0.01 78 52 1910 1983 1934 1929 normal 4 9.57 9.48 0.09 73 57 1910 1998 1934 1932 normal 1994 5 11.49 11.82 -0.33 51 78 1931 1983 1934 1933 normal 1943,1951 6 14.49 14.05 0.44 85 44 1977 1983 1934 1932 normal 7 16.18 16.22 -0.04 63 66 1981 1983 1934 1933 normal 8 19.05 18.71 0.34 78 51 1918 2019 1934 1932 normal 9 21.31 21.33 -0.02 61 68 1918 2019 1934 1933 normal 10 23.38 24.12 -0.74 41 88 1931 2019 1934 1933 bottom-third 11 25.97 27.04 -1.07 36 93 1931 2019 1934 1933 bottom-third 12 27.78 29.95 -2.17 21 108 1918 2019 1934 1933 bottom-third 18 39.07 44.02 -4.95 6 122 1931 2020 1931 1934 bottom-tenth 24 53.66 59.92 -6.26 4 124 1955 2020 1931 1934 bottom-tenth 36 83.37 89.88 -6.51 6 121 1955 2020 1932 1934 bottom-tenth 48 113.04 119.77 -6.73 9 117 1956 2019 1934 1932 bottom-tenth 60 138.27 149.63 -11.36 2 123 1957 2020 1935 1934 bottom-tenth