Year	% female
1971	43.1869
1973	45.6057
1974	47.9659
1975	49.66259
1976	48.69407
1977	51.2657
1979	60.28131
1980	60.83284
1981	65.10015
1983	49.91673
1984	49.69441
1985	49.08544
1986	50.35673
1987	50.22515
1991	51.62575
1999	58.37104
2000	58.42451
2001	56.4257
2002	44.24084
2003	42.02128