Year	% of population
2008	3.06577870043351
2010	3.84325630351066
2011	5.1746096341841
2012	6.80500844365501
2014	6.79900884841282
2015	7.36430166703485
2016	7.52611846979464
2017	7.73307418052138
2018	6.99934705024035
2019	8.12120000599127
2020	6.10475037123867