Year	% female
1981	39.2745704650879
1982	38.4975700378418
1983	38.7775382995605
1984	38.5600509643555
1985	38.2393493652344
1986	37.350471496582
1987	37.5692291259766
1988	39.1424217224121
1989	38.8510513305664
1990	39.9625587463379
1991	40.0204315185547
1992	39.8324813842773
1993	40.0618286132812
1994	40.2787094116211
1995	40.7330017089844
1996	40.8069190979004
1997	41.3002014160156
1998	42.2149314880371
1999	43.8471984863281
2000	46.3322486877441
2001	47.1807708740234
2002	49.1719512939453
2003	48.9555587768555
2004	47.785099029541
2005	46.9196701049805
2006	47.5175895690918
2007	48.7761192321777