Year	% of population
2007	4.76462963429735
2008	3.72764531138266
2009	5.66942091487516
2010	4.28957829785345
2011	5.21597556436295
2012	5.88309795147003
2013	7.44388603469162
2014	6.84601898017621
2015	5.77387329333642
2016	8.27090583284437
2017	4.01376264974684
2018	5.29637589745986
2019	4.86835072288685