Year	% of relevant age group
1999	76.8916473388672
2000	77.0689086914062
2001	77.1418533325195
2002	76.8281326293945
2003	76.229736328125
2004	76.0929107666016
2005	76.8368301391602
2006	78.8745880126953
2007	74.6665573120117
2008	70.5269470214844
2009	71.9856414794922
2010	73.1039428710938
2011	72.0472717285156
2012	72.9890365600586
2013	73.7125778198242
2014	74.5012512207031
2015	75.2229919433594
2016	75.6209411621094
2017	76.3198394775391
2018	77.2096328735352
2019	77.4152908325195
2020	77.5534286499023