Year	% female
1971	24.3907
1972	24.75999
1973	26.12579
1974	29.08871
1976	35.46782
1977	35.4185
1978	36.36455
1979	36.09465
1980	36.49162
1981	35.7838
1982	35.18315
1983	34.64657
1984	35.14056
1985	34.3642
1986	33.43938
2007	35.45912