Year	% of population
2001	16.6
2002	15.6
2003	15.4
2004	14.7
2005	13.6
2006	12.1
2007	10.7
2008	9.6
2009	7.8
2010	6.3
2011	5
2012	4.6
2013	4.4
2014	4.3
2015	4.2
2016	3.8
2017	3.9
2018	4.3
2019	6.6
2020	9.7
2021	12.8