Year	% of population
2000	93.4
2001	93.1
2002	86.6
2003	92.6
2004	92.3
2005	92
2006	99.5
2007	91.5
2008	91.3
2009	91.1
2010	92.7
2011	91.5
2012	90.7
2013	90.4
2014	90.2
2015	90
2016	89.8
2017	89.6
2018	86
2019	89.2
2020	89
2021	88.8
2022	89