Year	% of population
2000	18.1420997820909
2001	18.1321672789398
2002	18.1240393844879
2003	18.1159119641117
2004	18.1073334512583
2005	18.2143046881974
2006	18.3215050377941
2007	18.4289351977599
2008	18.5365954100808
2009	18.5836451995613
2010	18.6299433546528
2011	18.6750823563898
2012	18.7198772441434
2013	18.7693746653101
2014	18.82327602598
2015	18.8812861084251
2016	18.943110688409
2017	19.0084606960149
2018	19.0774037949849
2019	19.1492872746707
2020	19.2238337274066
2021	19.2617206174282
2022	19.304728768578