Year	% of population
2001	24.5
2002	23.2
2003	21.7
2004	19.8
2005	18.1
2006	16.5
2007	13.6
2008	11.8
2009	10.7
2010	10.8
2011	10.7
2012	11
2013	10.8
2014	10.6
2015	9.5
2016	8.3
2017	7.3
2018	6.7
2019	6.3
2020	5.9
2021	5.7