Year	% of relevant age group
1971	47.60319
1972	50.52759
1973	51.20313
1974	54.41977
1975	62.95729
1976	77.765
1977	79.94957
1978	76.53497
1980	101.50503
1983	84.83695
1985	96.74511
1986	94.09274
1987	93.20939
1988	89.65848
1989	94.91562
1992	81.32973
1993	82.66348
1999	103.06239
2000	101.24761
2004	108.88556
2007	109.1319