Year	% of population
2000	22.6
2001	23.9
2002	25.1
2003	26
2004	27.3
2005	28.1
2006	29.3
2007	30.65
2008	31.9
2009	33.4
2010	35.3
2011	37.2
2012	39.2
2013	42
2014	44.4
2015	47.4
2016	50.9
2017	54.3
2018	58.6
2019	62.2
2020	66.8
2021	70.5
2022	74.5