Year	% of relevant age group
1970	105.667
1971	102.5006
1972	100.3162
1973	98.40633
1974	97.08133
1975	99.32637
1976	101.343
1977	101.5856
1978	101.8737
1979	100.2375
1980	100.674
1981	99.83351
1982	100.5783
1983	100.6551
1984	100.7747
1985	102.3082
1986	103.5739
1987	104.6214
1988	103.5622
1989	103.5031
1990	103.0394
1991	102.1108
1992	100.6414
1993	103.1392
1994	100.4356
1995	102.4311
1996	106.1646
1997	105.7193
1998	102.0068
1999	102.1887
2000	101.5816
2001	101.7553
2002	101.2561
2003	101.4143
2004	102.8011
2005	102.6833
2006	103.1227
2007	103.2897
2008	102.5847
2009	100.9967
2010	101.1633
2011	100.5901
2012	99.8005
2013	99.35771
2014	99.98372
2015	99.79988
2016	99.37179
2017	98.47172
2018	99.45222