Year	% of population
2000	10.7
2001	10.6
2002	10.7
2003	10.8
2004	10.8
2005	10.9
2006	11
2007	11.1
2008	11.3
2009	11.6
2010	11.7
2011	12
2012	12.1
2013	12.4
2014	12.3
2015	12.9
2016	12.8
2017	12.9
2018	13.1
2019	13.1
2020	13.2
2021	13.4
2022	13.2