Year	% of population
2000	29
2002	24.6
2003	20.3
2004	17.6
2005	17.8
2006	15.2
2007	13.3
2008	13.4
2009	13
2010	12.5
2011	12.7
2012	10.7
2013	10.8
2014	11.3
2015	13.4
2016	13.2
2017	12.9
2018	12.6
2019	12.3
2020	12.1
2021	11