1901-2000 Inches 1 1.61 3.79 -2.18 11 118 1914 1938 1948 1956 bottom-tenth 2 3.80 7.69 -3.89 4 125 1984 2011 1948 1956 bottom-tenth 3 5.75 11.37 -5.62 2 127 1968 2021 1957 1956 bottom-tenth 4 7.83 15.02 -7.19 1 128 1957 1938 1957 1956 lowest 5 10.93 18.61 -7.68 2 127 1964 1938 1957 1956 bottom-tenth 6 14.35 22.51 -8.16 2 127 1964 1938 1957 1956 bottom-tenth 7 17.01 26.45 -9.44 2 127 1965 1938 1957 1956 bottom-tenth 8 18.38 29.66 -11.28 1 128 1957 2008 1957 1956 lowest 9 20.69 33.30 -12.61 1 128 1957 2008 1957 1956 lowest 10 25.82 37.13 -11.31 1 127 1957 2008 1957 1956 lowest 11 29.60 41.15 -11.55 2 126 1965 2008 1957 1956 bottom-tenth 12 32.16 44.66 -12.50 2 126 1965 2006 1957 1956 bottom-tenth 18 50.78 67.07 -16.29 3 125 1965 2006 1957 1956 bottom-tenth 24 80.80 89.25 -8.45 21 106 1966 2007 1950 1956 bottom-third 36 130.61 133.88 -3.27 42 84 1966 2008 1951 1956 bottom-third 48 184.64 178.50 6.14 68 57 1966 2009 1953 1956 normal 60 231.24 223.10 8.14 70 54 1966 2010 1953 1956 normal