Year	% of relevant age group
1972	91.68614
1973	92.92209
1974	101.75851
1975	112.63666
1976	114.90443
1977	108.9331
1978	121.59476
1981	121.47364
1982	129.39339
1983	123.83538
1984	126.55791
1985	125.02973
1986	109.52473
1987	112.09354
1988	116.0007
1989	114.9713
1990	110.3928
1991	107.13619
1992	105.95829
1993	105.80524
1994	107.42022
1995	106.7687
1996	106.80871
1997	111.26446
1999	109.67554
2000	108.13111
2001	110.99616
2002	114.67485
2003	112.8646
2004	109.37086
2005	112.15309
2006	112.60143
2007	115.59236
2008	112.88472
2009	111.42412
2010	113.43251
2011	114.72171
2012	104.81098
2013	105.4322
2014	107.5332
2015	109.0725
2016	104.58974
2017	103.9821
2018	102.51958