Year	Men	Women
1928	10.8	12.2
1932	10.3	11.9
1936	10.3	11.5
1948	10.3	11.9
1952	10.4	11.5
1956	10.5	11.5
1960	10.2	11
1964	10	11.4
1968	9.95	11
1972	10.14	11.07
1976	10.06	11.08
1980	10.25	11.6
1984	9.99	10.97
1988	9.92	10.54
1992	9.96	10.82
1996	9.84	10.94
2000	9.87	10.75