Year	% female
1975	52.5658912658691
1977	53.9006004333496
1978	52.814151763916
1979	56.0842094421387
1980	57.4585990905762
1981	57.3459701538086
1983	57.1715507507324
1988	61.8286399841309
1989	62.6029891967773
1990	62.8611106872559
1991	62.9526786804199
1992	63.2783508300781
1993	64.5193176269531
1994	64.7281723022461
1999	69.6560516357422
2000	70.2402191162109
2001	70.581901550293
2002	70.9720077514648
2003	71.2973098754883
2004	71.2694702148438
2005	71.4640274047852
2006	71.8556823730469
2007	71.6271362304688
2008	72.5584030151367
2009	72.5141372680664