Year	% of relevant age group
1970	104.5877
1971	104.9975
1972	105.6651
1973	106.4923
1974	106.7895
1975	108.3914
1976	109.0954
1977	109.842
1978	109.2445
1979	110.6363
1980	110.0135
1981	110.2451
1982	109.3727
1983	110.9714
1984	111.7929
1985	111.7345
1986	110.7118
1987	108.5478
1988	107.9866
1989	106.3015
1990	107.161
1991	104.2387
1992	103.6924
1993	104.2451
1994	103.829
1995	104.2677
1996	104.1699
1997	104.831
1998	104.8569
1999	104.7192
2000	106.4287
2001	107.6345
2002	109.2728
2003	111.658
2004	110.7473
2005	111.5435
2006	110.7035
2007	111.318
2008	111.4109
2009	107.9725
2010	108.6907
2011	107.9767
2012	107.1712
2013	106.5591
2014	105.696
2015	105.4874
2016	106.2175
2017	104.8531
2018	105.1222