Year	% of population
2000	61.1
2001	62.6
2002	63.8
2003	64.9
2004	65.9
2005	67.1
2006	68.2
2007	69.4
2008	70.5
2009	71.55
2010	72.8
2011	74
2012	75.3
2013	76.4
2014	77.4
2015	78.7
2016	79.8
2017	81
2018	82.2
2019	83.1
2020	84.3
2021	85.3
2022	86.1