Year	% of relevant age group
1970	105.004
1971	102.2881
1972	100.293
1973	98.54603
1974	96.74692
1975	98.50806
1976	100.2209
1977	100.4838
1978	100.5457
1979	98.68798
1980	99.12293
1981	98.40515
1982	97.90765
1983	97.48423
1984	98.28914
1985	99.72186
1986	100.0135
1987	101.1877
1988	100.9982
1989	100.9678
1990	100.9088
1991	99.8722
1992	98.29608
1993	101.204
1994	99.01456
1995	100.6927
1996	103.2263
1997	103.4333
1998	100.9949
1999	99.99821
2000	99.55015
2001	99.70792
2002	100.0731
2003	100.1173
2004	101.7315
2005	101.6055
2006	102.0942
2007	103.9024
2008	103.2041
2009	101.8954
2010	100.8576
2011	101.1345
2012	99.29163
2013	99.37032
2014	100.61
2015	102.3486
2016	101.5647
2017	97.62131
2018	98.36292