Year	% of population
2000	0.5
2001	0.6
2002	0.8
2003	1
2004	1.2
2005	1.5
2006	1.8
2007	2.1
2008	2.5
2009	2.9
2010	3.3
2011	3.8
2012	4.3
2013	4.7
2014	5.3
2015	5.8
2016	6.3
2017	6.7
2018	7.4
2019	7.8
2020	8.3
2021	9
2022	9.6