Year	% of relevant age group
1972	83.4694900512695
1973	83.6365127563477
1974	78.202278137207
1975	83.5630111694336
1976	88.1053314208984
1977	85.2130508422852
1978	84.1871795654297
1979	87.3594436645508
1980	84.7459182739258
1981	84.2922821044922
1982	85.6173629760742
1983	86.7283706665039
1984	86.9275131225586
1985	85.8069534301758
1986	89.4733123779297
1987	88.6582794189453
1988	87.7301177978516
1989	86.6949081420898
1990	86.7561416625977
1991	87.1586837768555
1992	86.9411697387695
1993	87.4628372192383
1994	87.941291809082
1995	87.6116561889648
1996	88.4439163208008
1997	88.3984832763672
1998	89.5862274169922
1999	92.2450637817383
2000	93.4213562011719
2001	93.018310546875
2002	96.018928527832
2003	95.2853698730469
2004	95.7321090698242
2005	97.5485000610352
2006	98.5017471313477
2007	99.8689498901367
2008	100.069000244141
2009	99.0403366088867
2010	99.38992
2011	100.4294
2012	100.1492
2013	98.96838
2014	99.82464
2015	99.34782
2016	98.12749
2017	99.08325
2018	97.65121