Year	% of population
2008	20.5268395860511
2009	20.4663341386084
2010	14.6362632769446
2011	14.221689765023
2012	12.9419105809372
2014	10.4289956383305
2015	14.6869600611377
2016	14.6030429166658
2017	15.4450516582344
2018	14.7772808173962
2019	13.1117107692795
2020	27.3857784810251