Year	% of population
1999	15.7
2000	4.7
2001	7.6
2002	10.5
2003	13.4
2004	16.3
2005	19.2
2006	14.4
2007	12.9
2008	28.1
2009	21.2
2010	35.4
2011	39.1
2012	42.9
2013	44.7
2014	50.5
2015	55.1
2016	58.2
2017	62.9
2018	65.8
2019	69.4
2020	72.9
2021	76.3
2022	76