Year	% of population
2000	62.6
2001	66.7
2002	70.4
2003	74.5
2004	78.2
2005	81.6
2006	84.5
2007	86.9
2008	89
2009	90.7
2010	92
2011	93.1
2012	94.1
2013	94.9
2014	95.65
2015	96.1
2016	96.6
2017	96.8
2018	97
2019	97.3
2020	97.4
2021	97.4
2022	97.6