Year	% of population
2000	15.4839125694728
2001	15.4699702662476
2002	15.4556386916142
2003	15.4411136035549
2004	15.4261950891506
2005	15.411075567238
2006	15.3955573459435
2007	15.3798283057387
2008	15.3636969947907
2009	15.3493517227238
2010	15.3367120218591
2011	15.3258767470413
2012	15.3165846226606
2013	15.3091019864254
2014	15.3029937577746
2015	15.2986880315426
2016	15.295584463313
2017	15.2940986448858
2018	15.2941290346009
2019	15.2954169382637
2020	15.2981863308557
2021	15.3021736218143
2022	15.3075886409031