Year	% of population
2000	35.2
2001	38.3
2002	41.4
2003	45.1
2004	47.8
2005	51.5
2006	54.7
2007	57.65
2008	61
2009	63.7
2010	66.2
2011	69.1
2012	71.3
2013	73.1
2014	75.2
2015	76.6
2016	78.3
2017	79.6
2018	80.7
2019	82
2020	83.1
2021	83.6
2022	84.6