Year	% of population
2000	4.3
2001	1.3
2002	3.4
2003	5.4
2004	6.8
2005	9.6
2006	9.7
2007	13.9
2008	16
2009	17
2010	17
2011	22.5
2012	20.6
2013	26.9
2014	27.8
2015	31.8
2016	35.1
2017	33.7
2018	47
2019	44.6
2020	47.5
2021	50.4
2022	50