Year	% of population
2000	62.8
2001	63
2002	63.4
2003	63.7
2004	64.3
2005	64.6
2006	65.6
2007	66.5
2008	67.4
2009	68.4
2010	69.7
2011	70.8
2012	71.9
2013	73
2014	74.35
2015	75.5
2016	76.7
2017	77.9
2018	79
2019	80.2
2020	81.1
2021	82
2022	83