Year	% of population
2000	84.4
2001	85.3
2002	85.6
2003	86.1
2004	86.3
2005	86.55
2006	86.7
2007	87
2008	87.1
2009	87.3
2010	87.5
2011	87.6
2012	87.9
2013	88.3
2014	88.6
2015	89.1
2016	89.6
2017	90.2
2018	90.7
2019	91.3
2020	91.9
2021	92.4
2022	92.8