Year	% of population
2000	0.8
2001	0.9
2002	1
2003	1.1
2004	1.3
2005	1.5
2006	1.7
2007	1.9
2008	2.2
2009	2.6
2010	3
2011	3.5
2012	4.1
2013	4.7
2014	5.5
2015	6.3
2016	7.2
2017	8.2
2018	9.3
2019	10.45
2020	11.8
2021	13.3
2022	14.8