Year	% of population
1993	6.1
1994	6.12501001358032
1995	6.62533283233643
1996	7.1229362487793
1997	7.61713981628418
1998	8.10726451873779
1999	6.9
2000	9.1
2001	9.5
2002	9.9
2003	11.4
2004	10.7
2005	11.1
2006	11.6
2007	12
2008	12.5
2009	12.6
2010	13.1
2011	14.8
2012	15.1
2013	15.4
2014	19.2
2015	16.2
2016	16.6
2017	17
2018	14.4
2019	17.6
2020	18.5
2021	19
2022	19.5