Year	% of population
2000	82.5
2001	83.3
2002	83.7
2003	84.3
2004	84.8
2005	85.2
2006	85.2
2007	85.3
2008	85.4
2009	85.2
2010	85.1
2011	84.8
2012	84.7
2013	84.6
2014	84.4
2015	84.5
2016	84.7
2017	84.8
2018	85
2019	85.2
2020	85.4
2021	85.7
2022	85.7