Year	% of population
2000	90.5
2001	92.5
2002	94.2
2003	95.6
2004	96.6
2005	97.4
2006	98.1
2007	98.5
2008	98.9
2009	99.2
2010	99.4
2011	99.5
2012	99.6
2013	99.7
2014	99.8
2015	99.8
2016	99.8
2017	99.8
2018	99.8
2019	99.8
2020	99.9
2021	99.9
2022	99.9