Year	% of relevant age group
1972	110.31211
1973	105.26774
1974	106.46627
1975	103.52619
1976	104.25047
1977	104.83247
1978	102.66417
1979	104.98064
1980	102.95681
1981	91.13751
1982	92.22915
1983	91.63818
1984	94.96846
1985	103.46516
1987	100.18383
1988	102.55841
1989	95.66544
1990	91.20531
1991	93.16651
1992	93.9776
1993	94.77966
1994	94.40053
1996	96.30397
1998	94.55329
1999	95.28852
2000	97.93517
2002	100.5591
2003	98.78271
2004	93.60958
2005	91.4509
2006	90.02396
2007	88.028
2008	86.97338
2010	82.08024
2011	78.39177
2012	76.64738
2013	74.22933
2016	79.07172
2017	83.68083
2018	79.66851