Year	% of population
2000	58.6
2001	60.3
2002	58.6
2003	63.7
2004	65.4
2005	67
2006	68.8
2007	70.5
2008	72.3
2009	74.1
2010	81.1
2011	82.3
2012	83.2
2013	84.3
2014	85.3
2015	86.4
2016	87.5
2017	88.6
2018	90.2
2019	91.4
2020	93.7
2021	95.5
2022	97.1