Year	% of population
2000	7.6
2001	9.8
2002	12.7
2003	16.8
2004	21.7
2005	27.7
2006	34.2
2007	41
2008	46.9
2009	52.4
2010	56.8
2011	59.5
2012	61.6
2013	63
2014	63.9
2015	64.3
2016	64.7
2017	64.9
2018	65.1
2019	64.7
2020	64.8
2021	64.6
2022	64