Year	% of relevant age group
1970	142.33676
1971	145.7017
1972	147.38477
1973	151.68712
1974	152.10622
1982	134.91749
1983	132.8516
1984	128.2331
1985	121.4272
1986	109.01018
1987	126.00947
1988	126.51988
1989	127.17235
1990	130.89368
1991	126.64095
1992	126.1365
1993	146.30262
1994	134.7851
1995	143.20709
1996	147.83995
1998	143.90119
1999	143.07056
2000	144.22188
2001	136.89559
2002	139.00011
2004	134.4394
2005	133.76498
2006	132.15674
2007	128.54081
2008	130.70431
2009	122.3371
2010	116.76517
2011	118.11763
2012	119.7206
2013	122.13329
2014	119.55863
2015	115.45721
2016	114.39594
2017	111.85605
2018	113.5463