Year	% of population
1996	30.1
2001	33.4
2002	31.2
2003	29.5
2004	26.1
2005	31.9
2006	18
2007	16.8
2008	14.8
2009	15.3
2010	14
2011	12.9
2012	13.6
2013	11.3
2014	11.2
2015	11.2
2016	12.8
2017	11.7
2018	10.1
2019	10.2
2020	9.5
2021	8.3