Year	% of relevant age group
1970	116.55716
1971	112.6615
1972	108.69565
1974	113.08767
1975	109.18367
1976	100.12626
1977	91.90535
1978	101.84502
1980	95.83843
1981	105.39877
1982	103.07882
1983	94.05204
1984	97
1985	103.16456
1986	112.56219
1987	100.61125
1988	100.60168
1989	87.15815
1991	110.18182
1992	99.87639
1993	100.8794
1994	102.66497
1995	96.55612
1996	104.09731
1997	109.26641
1998	106.09598
1999	108.75817
2000	111.88904
2001	97.83784
2002	101.52566
2003	99.7151
2004	94.44444
2005	99.25484
2007	110.43219
2008	106.13772
2009	104.38066
2010	109.69231
2011	114.82602
2012	112.48164
2013	107.51773
2014	103.29218
2015	102.27273
2016	98.0315
2017	101.03761
2018	104.63918