Year	% of relevant age group
1970	104.1995
1971	101.4936
1972	103.6906
1973	106.5036
1974	112.2558
1975	113.0084
1976	114.5989
1977	109.8771
1978	106.9916
1979	104.5835
1980	105.684
1981	108.6821
1982	107.7641
1983	106.7474
1984	104.8702
1985	108.0127
1986	104.9142
1987	103.4447
1988	103.8067
1989	102.0409
1990	102.2418
1991	105.198
1992	103.9461
1993	102.8532
1994	104.9539
1995	104.9896
1996	107.8354
1997	107.1461
1998	106.7522
1999	106.9363
2000	117.0128
2001	110.6134
2002	108.2745
2003	107.9301
2004	107.1707
2005	104.4487
2006	107.7328
2007	106.9046
2008	105.6607
2009	105.7498
2010	107.596
2011	107.0516
2012	105.5881
2013	105.1783
2014	106.1541
2015	106.1846
2016	104.8205
2017	103.7784
2018	104.5014