Year	% of population
2007	0.548151992299749
2008	0.550884839227872
2009	0.655914864927736
2010	1.66450999079421
2011	0.617303903584549
2012	1.02645296711939
2014	2.1650755484009
2015	1.49015512086349
2016	0.837353710577346
2017	1.62742816492711
2018	2.07267824995271
2019	2.30118324593996