Year	% of relevant age group
1972	77.05932
1973	76.99128
1974	84.76149
1975	87.19144
1976	89.43864
1977	91.20176
1978	95.55676
1979	97.49376
1980	100.1355
1981	102.6533
1982	103.0904
1983	99.72565
1984	96.75593
1985	95.42614
1986	93.20934
1987	91.48873
1988	92.80312
1989	91.02468
1990	89.9192
1991	88.24882
1992	87.97613
1993	90.00636
1994	90.62651
1995	94.04479
1996	95.39775
1997	101.9827
1998	98.65617
1999	98.27877
2000	102.0745
2001	107.409
2002	110.114
2003	110.3331
2004	112.2748
2005	116.1684
2006	115
2007	117.3589
2008	119.615
2009	116.1174
2010	114.6979
2011	118.4115
2012	117.2376
2013	117.6942
2014	119.1429
2015	119.2342
2016	119.1572
2017	119.0686
2018	117.7009