Year	% of population
1990	32.8
1991	26.9192943572998
1992	27.4086132049561
1993	27.897253036499
1994	28.3845348358154
1995	28.8697834014893
1996	29.35231590271
1997	29.8314571380615
1998	30.3065280914307
1999	30.7767562866211
2000	23
2001	29.4
2002	29.7
2003	29.9
2004	30.2
2005	30.5
2006	30.8
2007	31.1
2008	20
2009	29
2010	36
2011	38.3
2012	40.7
2013	43.1
2014	44.9
2015	48
2016	50.5
2017	53
2018	55.3
2019	57.6
2020	59.7
2021	61.8
2022	63.2