Year	% of population
2006	5.41182106998579
2007	4.53100798268729
2008	6.15377683660366
2009	10.1342238998162
2011	8.07023746335202
2012	8.45983369959517
2014	5.9754475717732
2015	4.67571230701917
2016	5.77127198212
2017	5.76782828820785
2018	5.7197589869227
2019	5.40454685681647
2020	5.15245494823567