1901-2000 Inches 1 1.71 2.35 -0.64 17 112 1930 2015 1989 1999 bottom-third 1938 2 4.44 4.58 -0.14 51 78 1976 2015 1999 1998 normal 3 6.70 6.74 -0.04 57 72 1917 2015 1999 1998 normal 4 8.88 9.23 -0.35 49 80 1939 2018 1999 1998 normal 5 10.79 11.85 -1.06 29 100 1917 2018 1999 1998 bottom-third 6 13.09 14.62 -1.53 20 109 1917 2018 1999 1998 bottom-third 7 16.54 17.55 -1.01 33 96 1917 2018 1999 1998 bottom-third 8 19.20 20.46 -1.26 27 102 1917 2015 1999 1998 bottom-third 9 21.52 22.98 -1.46 28 101 1956 2015 1999 1998 bottom-third 10 23.96 25.49 -1.53 30 99 1956 2015 1999 1998 bottom-third 11 26.08 27.62 -1.54 27 102 1910 2018 1999 1998 bottom-third 12 28.22 29.94 -1.72 24 105 1910 1973 1988 1999 bottom-third 18 40.36 44.58 -4.22 16 112 1954 2019 1988 1999 bottom-third 24 56.69 59.90 -3.21 19 109 1931 2019 1989 1999 bottom-third 36 90.58 89.86 0.72 70 57 1956 2019 1990 1999 normal 48 122.44 119.78 2.66 86 40 1956 2019 1991 1999 top-third 60 156.14 149.68 6.46 101 24 1956 2019 1992 1999 top-third