Year	% female
1970	30.6491107940674
1971	34.5371017456055
1972	35.3006286621094
1973	34.9219818115234
1974	37.4452018737793
1975	39.0783996582031
1976	40.0056381225586
1977	38.2847099304199
1978	40.0641899108887
1979	40.2504386901855
1980	43.3116493225098
1981	43.9805183410645
1982	43.6256294250488
1983	45.8699607849121
1984	46.2634315490723
1985	46.2439384460449
1986	47.2972793579102
1987	50.4744606018066
1998	52.7679710388184
1999	53.9785385131836
2000	54.404239654541
2001	49.1025695800781
2002	50.1263008117676
2004	50.3625793457031
2006	53.1532897949219
2009	48.5644798278809