Year	% of population
2001	10.789151644780645
2002	10.530481883528799
2003	10.306485891797186
2004	9.81038046719742
2005	9.344813813683235
2006	8.814800835298902
2007	8.287498831129458
2008	7.945022293455514
2009	7.286006653188554
2010	6.697593182221473
2011	6.024533730637602
2012	5.766073141660759
2013	5.506856620240593
2014	5.3346554170191745
2015	5.541955208105833
2016	5.78441344771804
2017	6.090084415204976
2018	5.987428811309569
2019	6.037566355710337
2020	6.443161312626858
2021	6.787707192160003