Year	% of population
2009	0.626717501097609
2010	0.62615447349533
2011	0.625635097963854
2012	0.625463285192762
2013	0.625292446690191
2014	0.625122539891064
2015	0.624952672188707
2016	0.624803183571807
2017	0.624674077163256
2018	0.624563409681716
2019	0.624473124876408
2020	0.624402279475356
2021	0.624350817066035
2022	0.624317815790139