Year	% of population
2000	46.7
2001	47.5
2002	48.8
2003	50.3
2004	52.1
2005	53.7
2006	55.7
2007	58.2
2008	60.7
2009	62.8
2010	66
2011	68.5
2012	71
2013	74.2
2014	76.8
2015	79.2
2016	81.9
2017	84.2
2018	86
2019	87.8
2020	89.6
2021	90.9
2022	92.2