Year	% of relevant age group
1970	83.59779
1971	84.2904
1972	87.10401
1973	89.18577
1974	89.14679
1975	91.92295
1976	93.24601
1977	95.19256
1978	92.53538
1979	94.36757
1980	95.33441
1981	97.0873
1982	97.96865
1983	102.5648
1984	102.5689
1985	101.9295
1986	102.2959
1987	99.24669
1988	99.76315
1989	99.69307
1990	99.84746
1991	100.8118
1992	101.5801
1993	102.5227
1994	102.5583
1995	102.3612
1996	103.9133
1997	104.7362
1998	105.9404
1999	106.146
2000	106.5334
2001	106.3628
2002	106.1601
2003	113.9391
2004	114.312
2005	116.1976
2006	116.0253
2007	115.9182
2008	116.7706
2009	111.6863
2010	114.1944
2011	112.1623
2012	110.1653
2013	109.0661
2014	107.1189
2015	106.7403
2016	106.6531
2017	104.2013
2018	104.9265