Year	% of population
2001	15.867163624795408
2002	15.897462965494762
2003	15.775265787919535
2004	15.388869219215312
2005	14.71678029274245
2006	13.728750177314042
2007	12.729304295327532
2008	12.021352979147851
2009	11.297798496298293
2010	10.759628628512333
2011	10.310851566410438
2012	10.07752618210967
2013	9.911033908259988
2014	9.848257184143275
2015	9.794463848172972
2016	9.716363238858444
2017	9.587120717112557
2018	9.64020239756344
2019	10.182002458081126
2020	10.913227652139625
2021	11.443582190823372