Year	% of population
2000	1.3
2001	1.4
2002	1.5
2003	1.6
2004	1.8
2005	2
2006	2.3
2007	2.5
2008	2.9
2009	3.2
2010	3.5
2011	4
2012	4.3
2013	4.8
2014	5.2
2015	5.8
2016	6.2
2017	6.8
2018	7.3
2019	8
2020	8.7
2021	9.4
2022	10.2