Year	% of relevant age group
1970	113.1305
1971	113.4579
1972	114.132
1973	115.1528
1974	115.3613
1975	117.1815
1976	118.0355
1977	118.5571
1978	118.0805
1979	119.1495
1980	118.2281
1981	118.552
1982	117.1287
1983	118.9022
1984	120.0974
1985	119.8515
1986	118.1865
1987	114.921
1988	114.3563
1989	112.2624
1990	112.9406
1991	109.6196
1992	108.6956
1993	109.2166
1994	108.4641
1995	109.0587
1996	108.7866
1997	109.2064
1998	109.0476
1999	108.9162
2000	110.7053
2001	111.7373
2002	113.181
2003	113.7779
2004	112.8618
2005	114.1922
2006	113.0615
2007	113.3395
2008	113.1038
2009	109.1002
2010	109.9369
2011	109.1047
2012	108.275
2013	107.5616
2014	106.7914
2015	106.6437
2016	107.4125
2017	106.2573
2018	106.5963