Year	% of population
2000	73.6
2001	77.2
2002	77.8
2003	78.5
2004	79.2
2005	81.6
2006	80.5
2007	81.3
2008	82
2009	82.7
2010	89.3
2011	88.7
2012	89.3
2013	86.4
2014	87.1
2015	87.3
2016	88.1
2017	86.3
2018	89.6
2019	90.3
2020	91.1
2021	91.8
2022	93.5