Year	% of relevant age group
1973	57.53082
1974	59.86325
1975	61.16019
1977	72.49822
1978	75.26834
1979	78.03841
1980	83.0371
1981	83.88459
1982	90.33912
1983	94.50507
1984	73.42604
1985	63.31177
1986	89.50261
1987	76.19057
1988	80.09144
1989	74.30893
1990	77.1172
1991	78.65672
1992	79.75882
1993	89.0155
1994	91.81536
1995	91.73593
1996	91.78184
1997	92.42309
1998	98.71655
1999	114.02636
2000	113.46599
2001	112.48653
2002	112.45675
2003	102.17181
2004	101.69343
2005	104.77871
2006	104.09217
2007	115.45646
2008	105.41496
2009	103.50788
2010	105.55414
2011	104.38528
2012	102.05109
2013	101.84737
2014	103.16953
2015	103.89529
2016	106.91116
2017	109.96376
2018	108.96123