Year	% of population
1996	11
1997	2.15848255157471
1998	4.29508972167969
1999	6.42685508728027
2000	12.4
2001	12.7
2002	13.1
2003	13.4
2004	13.8
2005	14.1
2006	12.4
2007	14.9
2008	15.3
2009	17.2
2010	19.5
2011	17.3
2012	17.5
2013	17.8
2014	18.1
2015	18.4
2016	13.5
2017	19.2
2018	16.6
2019	23.6
2020	20.5
2021	20.9
2022	19