Year	% of population
2000	97.2
2001	97.2
2002	97
2003	96.9
2004	96.9
2005	96.9
2006	96.8
2007	96.8
2008	96.7
2009	96.8
2010	96.7
2011	96.6
2012	96.8
2013	96.6
2014	96.6
2015	96.4
2016	96.2
2017	96.1
2018	95.9
2019	95.8
2020	95.5
2021	95.1
2022	95