Year	% of relevant age group
1974	101.2882
1975	98.04505
1976	82.96404
1977	80.26804
1978	74.37087
1979	62.94632
1980	66.35672
1981	67.53477
1982	96.77311
1983	94.14642
1984	100.05786
1985	103.66874
1986	101.94619
1987	105.98554
1988	108.45159
1989	109.24639
1990	109.7986
1991	104.69979
1992	102.12454
1993	99.37982
1994	99.32552
1995	105.46329
1996	98.19071
1997	93.4895
1998	89.23524
2007	106.37198
2012	104.19579
2013	100.18217
2014	104.39267
2015	98.28109