Year	% of relevant age group
1973	88.40159
1974	87.10222
1975	94.22267
1976	99.33873
1977	101.6989
1978	104.584
1979	102.6338
1980	103.907
1981	105.4129
1982	102.7262
1983	105.6604
1984	102.2542
1985	102.09
1986	102.1881
1987	100.3221
1988	98.40498
1989	94.55284
1990	92.58249
1991	91.06283
1992	91.19022
1993	91.70017
1994	93.64807
1995	97.69242
1996	99.98837
1997	107.0972
1998	105.1129
1999	101.094
2000	108.5676
2001	111.9239
2002	117.3614
2003	117.8853
2004	118.2894
2005	121.0138
2006	121.8104
2007	121.8422
2008	127.3902
2009	124.6562
2010	124.9487
2011	131.3356
2012	129.3735
2013	130.716
2014	130.9658
2015	130.2845
2016	128.3447
2017	127.0639
2018	126.4528