Year	% of relevant age group
1971	100.40687
1972	102.52825
1973	105.26497
1974	106.93123
1975	101.96763
1976	98.35074
1977	96.49122
1978	96.98043
1979	98.46731
1980	98.54333
1981	103.88835
1982	99.69537
1983	99.39694
1984	96.68473
1985	96.05151
1986	97.01236
1987	95.72279
1988	93.61404
1989	94.41873
1992	89.19344
1998	97.0956
1999	106.30926
2000	102.9697
2001	102.92634
2002	98.72623
2003	101.08191
2004	100.22844
2005	96.28703
2006	95.58978
2007	97.9892
2010	101.72803
2011	100.99559
2012	101.612
2013	100.99297
2014	98.75328
2015	103.54872
2016	101.52898
2017	99.94388