Year	% of population
2006	5.29716480968018
2009	6.08855756334969
2011	5.35490571715522
2012	5.94584365511563
2015	8.39076193790541
2016	2.5215092409749
2017	2.47217289434713
2018	1.65839456232289
2019	1.62606690723378
2020	1.61995368872356