Year	% of population
1991	10.1
1992	9.39822673797607
1993	11.6420764923096
1994	13.8845663070679
1995	16.1250171661377
1996	18.3627471923828
1997	20.5970783233643
1998	22.8273296356201
1999	25.0527400970459
2000	26.5
2001	24.8
2002	27
2003	33.1
2004	35.3
2005	37.5
2006	39.7
2007	41.9
2008	44.5
2009	43.4
2010	52
2011	53.2
2012	56
2013	58
2014	60
2015	62.1
2016	64.2
2017	67.4
2018	68.3
2019	70.1
2020	71.8
2021	73.7
2022	75.9