Year	% of population
2000	1.7
2001	2.2
2002	2.5
2003	3
2004	3.5
2005	4.1
2006	4.7
2007	5.2
2008	5.9
2009	6.5
2010	7
2011	7.6
2012	8.5
2013	9.5
2014	10.6
2015	11.9
2016	13.8
2017	15.75
2018	18.1
2019	20.7
2020	23.6
2021	26.4
2022	30