Year	% of relevant age group
1971	115.6342
1972	116.7295
1973	118.1219
1974	118.5477
1975	120.208
1976	120.8335
1977	121.38
1978	120.7748
1979	122.2559
1980	121.1157
1981	121.5863
1982	119.6831
1983	121.5946
1984	123.0485
1985	122.5226
1986	120.407
1987	116.3951
1988	115.7959
1989	113.4057
1990	114.2321
1991	110.6255
1992	109.7128
1993	109.9649
1994	109.5215
1995	109.9181
1996	109.0573
1997	109.6125
1998	109.9009
1999	109.6897
2000	111.7391
2001	113.1
2002	114.7809
2003	115.2985
2004	114.0788
2005	115.5024
2006	114.1419
2007	114.5492
2008	114.3533
2009	110.039
2010	110.8357
2011	110.0793
2012	109.0389
2013	108.3623
2014	107.4518
2015	107.2981
2016	108.2035
2017	107.0052
2018	107.312