Year	% of relevant age group
1974	94.92238
1975	98.23105
1976	101.7826
1977	103.8817
1978	106.3188
1979	107.7693
1980	109.2083
1981	111.0158
1982	110.1562
1983	110.9462
1984	108.3482
1985	107.2073
1986	106.1423
1987	104.6685
1988	104.1615
1989	101.0702
1990	100.51
1991	99.2834
1992	98.88996
1993	99.99529
1994	100.5366
1995	102.7886
1996	104.4047
1997	108.7814
1998	107.6589
1999	105.0452
2000	110.7952
2001	114.0922
2002	116.1669
2003	115.3844
2004	115.1346
2005	116.7507
2006	116.2064
2007	115.5165
2008	117.2891
2009	115.5366
2010	115.3079
2011	117.6316
2012	116.9738
2013	116.8282
2014	118.0723
2015	117.9935
2016	117.9459
2017	116.6839
2018	116.7817