Year	% female
1970	20.5041599273682
1971	20.7018203735352
1972	20.2946605682373
1973	20.4096908569336
1974	20.3365592956543
1975	20.4375705718994
1976	21.4573001861572
1977	21.9191207885742
1978	22.6262493133545
1979	23.233699798584
1980	23.5584392547607
1981	23.8930892944336
1982	24.5160598754883
1983	24.6949691772461
1984	25.0589504241943
1985	25.6698207855225
1986	26.0178298950195
1987	26.4656105041504
1988	26.271089553833
1989	26.1968593597412
1990	25.7980403900146
1991	25.8971004486084
1992	25.6440105438232
1993	26.0923595428467
1994	27.4518508911133
1995	28.9703598022461
1996	30.4407405853271
1997	31.5041694641113
1998	33.0551605224609
1999	34.3469696044922
2000	35.3406410217285
2001	36.4821395874023
2002	36.7355995178223
2003	36.7929916381836
2004	36.8692207336426
2005	37.8999290466309
2006	37.4563217163086
2007	38.4144592285156
2008	39.1800193786621
2009	39.7853584289551
2010	40.2546806335449
2011	40.9117317199707
2012	40.5429496765137
2013	40.200569152832
2014	40.4291687011719
2015	40.5530700683594
2016	40.2282600402832
2017	40.0723114013672
2018	39.8273086547852
2019	39.7307395935059
2020	39.7554206848145
2021	39.7548408508301
2022	39.7198295593262