Year	% female
1971	47.05882
1972	61.87845
1974	59.22619
1975	62.91793
1976	50.87719
1982	55.4007
1983	56.13383
1984	41.74757
1985	48.77193
1986	56.68016
1987	53.91304
1988	62.10526
1990	72.50608
1991	68.35749
2000	54.31034
2001	49.67855
2002	36.24504
2003	33.5277
2004	31.76936
2005	33.59173