Year	% female
1971	10.0782804489136
1972	9.63665008544922
1973	8.63453960418701
1974	7.56054019927979
1976	8.50228977203369
1977	11.991660118103
1978	8.98748970031738
1979	7.24395990371704
1980	7.68683004379272
2007	13.5213098526001