Year	% female
1971	24.2035102844238
1972	24.1938800811768
1973	23.7518997192383
1974	26.4334297180176
1975	28.3381500244141
1976	29.1233406066895
1977	29.3429298400879
1978	34.6764984130859
1979	37.1841316223145
1980	41.2925910949707
1981	46.8967781066895
1983	52.9956016540527