Year	% of population
2005	21.7226521186561
2006	18.4473259403956
2007	13.7305977840323
2008	10.747955818325
2009	12.4526875750447
2010	3.50814153752139
2011	2.8076425461632
2012	2.92943343649934
2015	1.86218058435503
2016	1.67900916722844
2017	2.19059265388307