Year	% of relevant age group
1999	38.9506416320801
2000	39.1736183166504
2001	39.9194107055664
2002	41.9715690612793
2003	43.7973213195801
2004	44.157958984375
2005	44.4729804992676
2006	45.9355201721191
2007	47.201358795166
2008	48.3709411621094
2009	49.0888214111328
2010	49.878231048584
2011	50.0599899291992
2012	50.9214401245117
2013	51.6275215148926
2014	51.6426315307617
2015	52.2203788757324
2016	52.9717216491699
2017	52.5522918701172
2018	52.9541816711426
2019	53.189868927002
2020	53.0395812988281