Year	% of population
2000	12.7
2001	10.2
2002	11.9
2003	13.5
2004	15.2
2005	14
2006	18.6
2007	20.3
2008	22
2009	23.7
2010	25.5
2011	23
2012	29
2013	30.8
2014	27.2
2015	29
2016	42.9
2017	44.3
2018	44.8
2019	48
2020	51.1
2021	54.2
2022	55