Year	% of relevant age group
1970	74.63829
1971	75.9375
1972	78.6804
1973	85.08969
1974	83.87885
1975	84.60612
1976	85.24034
1977	88.94813
1978	82.33766
1979	83.7494
1980	83.93133
1981	86.68453
1982	87.64512
1983	93.62783
1984	96.27576
1985	97.62445
1986	99.98571
1987	94.07001
1988	94.30556
1989	94.92155
1990	97.3818
1991	99.41328
1992	101.3436
1993	103.1397
1994	103.7448
1995	103.6984
1996	104.6762
1997	105.6802
1998	107.9937
1999	106.5578
2000	108.9317
2001	107.842
2002	106.1737
2003	120.1704
2004	120.2883
2005	120.0386
2006	120.6341
2007	117.3305
2008	117.5397
2009	110.7584
2010	115.1776
2011	110.2261
2012	108.9492
2013	107.0984
2014	103.5771
2015	103.9481
2016	105.6957
2017	102.0636
2018	103.7881