Year	% of population
2007	1.38231463522228
2008	0.580745318620131
2009	1.09042375273503
2010	2.14284091904643
2011	1.17396419085812
2012	1.54785707484936
2014	2.35513831267313
2015	1.17137624118311
2016	1.47977927048588
2017	1.36427234375012
2018	1.58404314682013
2019	1.93021274559678