Year	% of relevant age group
1970	140.4259
1971	144.0824
1972	145.525
1973	145.3516
1974	144.6395
1975	145.2564
1976	140.6626
1977	141.0273
1978	142.4037
1979	155.8326
1980	147.3332
1981	145.7781
1982	145.2135
1983	138.7898
1984	142.8244
1985	137.5625
1986	129.2906
1987	132.427
1988	138.3702
1989	129.4407
1990	140.1261
1991	126.2272
1992	124.8485
1993	128.5975
1994	128.7082
1995	124.3872
1996	122.3503
1997	122.9408
1998	122.6903
1999	117.5132
2000	119.7722
2001	122.3809
2002	120.8608
2003	119.1812
2004	118.174
2005	122.6454
2006	114.4187
2007	113.0903
2008	111.5636
2009	108.8027
2010	104.1316
2011	102.0968
2012	98.66723
2013	100.4527
2014	100.5565
2015	100.3197
2016	100.8284
2017	100.7125
2018	100.8864