Year	% of relevant age group
1970	105.6168
1971	102.4243
1972	100.2134
1973	98.51474
1974	97.3024
1975	99.55019
1976	101.5781
1977	101.6652
1978	101.8879
1979	100.253
1980	100.6105
1981	99.70235
1982	101.2944
1983	101.6818
1984	100.9241
1985	102.5438
1986	104.2384
1987	105.7143
1988	104.5538
1989	104.3205
1990	103.6048
1991	102.6772
1992	101.3186
1993	103.827
1994	100.381
1995	102.4965
1996	107.3927
1997	106.4377
1998	102.0876
1999	103.2575
2000	102.63
2001	101.9717
2002	101.03
2003	101.7852
2004	103.0963
2005	103.309
2006	103.9204
2007	102.6922
2008	102.038
2009	100.3627
2010	101.7009
2011	100.1706
2012	101.1036
2013	99.89763
2014	100.0508
2015	99.48921
2016	99.32827
2017	98.24044
2018	99.1621