Year	% of relevant age group
1971	65.885627746582
1972	65.0178604125977
1973	64.7177276611328
1974	56.0995597839355
1975	67.5477294921875
1976	68.8613433837891
1977	88.2584915161133
1978	88.7251434326172
1980	94.6139907836914
1983	63.7847213745117
1985	69.7767715454102
1986	69.6184387207031
1987	61.8894386291504
1988	63.4821090698242
1989	65.0360107421875
1993	66.9285507202148
1999	62.0991287231445
2000	60.0405006408691
2004	82.3421936035156
2007	72.7031021118164