Year	% of population
2000	85.4
2001	86.9
2002	88.3
2003	89.8
2004	91.1
2005	92.2
2006	93
2007	93.8
2008	94.4
2009	94.9
2010	95.2
2011	95.6
2012	95.6
2013	95.7
2014	95.5
2015	95.3
2016	95.1
2017	94.7
2018	94.5
2019	94
2020	93.6
2021	93.1
2022	92.5