Year	% of relevant age group
1971	43.7451782226562
1972	46.302921295166
1973	51.6529884338379
1974	52.2646789550781
1976	49.2037391662598
1977	49.7444496154785
1981	44.9397583007812
1982	48.9615097045898
1983	51.5651092529297
1984	48.7240791320801
1987	61.3226890563965
1988	64.5141296386719
1989	61.6376190185547
1991	62.734619140625
1992	61.9700088500977
1993	62.8800010681152
1995	64.4512634277344
1996	71.2606887817383
1998	77.7493515014648
2000	89.0393600463867
2001	86.4921417236328
2002	86.1663436889648
2003	86.460823059082
2005	88.8381195068359
2006	87.7152404785156
2007	89.8533172607422
2008	90.783447265625
2009	93.6388778686523
2010	97.2365036010742
2011	97.6379089355469
2012	95.7601699829102
2013	93.859260559082
2014	92.8024597167969
2015	92.811279296875
2016	91.8200912475586