Year	% of relevant age group
1970	131.9602
1971	138.3391
1972	139.2893
1973	139.5406
1974	138.9187
1975	137.8347
1976	133.5638
1977	135.0159
1978	135.6101
1979	148.0181
1980	140.1351
1981	138.4405
1982	137.7844
1983	131.4426
1984	135.2361
1985	130.1148
1986	123.0383
1987	126.1756
1988	131.9117
1989	123.5379
1990	133.899
1991	119.8031
1992	120.1699
1993	122.5386
1994	121.9169
1995	118.1933
1996	116.42
1997	116.8987
1998	116.9156
1999	114.3942
2000	114.943
2001	116.8471
2002	117.4338
2003	114.6973
2004	115.6937
2005	113.0205
2006	112.305
2007	112.5936
2008	109.235
2009	107.0178
2010	102.2502
2011	100.0662
2012	97.04781
2013	98.25828
2014	98.70392
2015	100.8884
2016	100.8446
2017	100.4794
2018	100.1628