Year	% of relevant age group
1970	139.14
1971	143.4483
1972	144.3481
1973	144.0709
1974	143.2435
1975	143.4657
1976	138.9291
1977	139.5421
1978	140.8788
1979	153.5256
1980	145.3103
1981	143.7245
1982	142.9769
1983	136.5732
1984	140.4089
1985	135.8188
1986	127.9189
1987	130.9778
1988	136.7207
1989	128.1215
1990	138.2175
1991	124.8654
1992	123.4688
1993	127.3224
1994	127.4551
1995	123.362
1996	121.4478
1997	121.8095
1998	121.6639
1999	116.742
2000	118.8844
2001	121.431
2002	120.0422
2003	118.4681
2004	117.5329
2005	121.7957
2006	113.9535
2007	112.7673
2008	111.1898
2009	108.4749
2010	103.8686
2011	101.834
2012	98.53249
2013	100.2975
2014	100.4447
2015	100.2552
2016	100.6995
2017	100.5767
2018	100.7464