Year	% of population
2008	2.35033956944731
2009	2.44796087623527
2010	3.36448837940303
2011	2.65667621081209
2013	2.30605119450113
2015	3.00681606181463
2016	3.26021307803828
2017	3.06375960853337
2018	3.61624644308884
2019	4.67332317206959