Year	% of relevant age group
1970	131.7314
1971	138.8865
1972	139.53
1973	139.9305
1974	139.2997
1975	137.7133
1976	133.3495
1977	134.6611
1978	135.0036
1979	147.118
1980	139.5285
1981	137.9585
1982	136.997
1983	130.4004
1984	134.0508
1985	129.4824
1986	122.4167
1987	125.5105
1988	131.2159
1989	122.8289
1990	132.8315
1991	119.0989
1992	119.2047
1993	122.0548
1994	121.3693
1995	117.776
1996	116.06
1997	116.2804
1998	116.5089
1999	114.1151
2000	114.5867
2001	116.4738
2002	117.0486
2003	114.493
2004	115.3635
2005	112.7738
2006	112.1175
2007	112.5279
2008	109.1186
2009	106.8493
2010	102.0936
2011	99.95546
2012	97.00756
2013	98.33098
2014	98.76415
2015	100.8559
2016	100.699
2017	100.3523
2018	100.0181