Year	% of relevant age group
1970	103.9604
1971	104.0065
1972	102.0117
1973	101.0703
1974	100.7294
1975	100.6927
1976	100.9963
1977	100.5826
1978	100.7907
1979	100.6043
1980	100.2899
1981	100.1413
1982	100.8213
1983	101.4511
1984	102.5975
1985	99.91686
1986	100.5572
1987	100.5257
1988	100.2629
1989	98.72766
1990	98.40408
1991	98.48342
1992	98.79853
1993	98.82982
1994	99.3069
1995	100.2789
1996	99.88551
1997	99.57078
1998	99.16604
1999	99.21136
2000	98.16237
2001	99.54533
2002	99.93951
2003	99.37385
2004	100.4209
2005	99.26588
2006	99.76611
2007	100.4835
2008	100.1488
2009	98.80117
2010	100.5932
2011	100.7397
2012	100.9605
2013	99.29131
2014	98.65316
2015	99.81956
2016	99.99798
2017	96.79257
2018	96.57037