Year	% of population
2000	96.4
2001	97
2002	97.4
2003	97.8
2004	98.1
2005	98.4
2006	98.6
2007	98.8
2008	99
2009	99.1
2010	99.2
2011	99.3
2012	99.4
2013	99.4
2014	99.5
2015	99.6
2016	99.6
2017	99.7
2018	99.7
2019	99.7
2020	99.7
2021	99.7
2022	99.7