Year	% of population
2001	8.07798112098283
2002	7.807086064639161
2003	7.727778145827655
2004	7.526160534039605
2005	7.423051007277356
2006	7.043353436849691
2007	7.292497649658112
2008	7.132360331890812
2009	7.321440796487958
2010	7.336540621743426
2011	7.272002482147538
2012	7.027939152245563
2013	6.5576627793905615
2014	6.253097172045052
2015	5.8946361894851576
2016	5.615776540549539
2017	5.503666945942092
2018	5.288837650484622
2019	5.202648126838513
2020	5.035035727770519
2021	4.8340555836076655