Year	% of population
1995	31.3
1996	30.0130176544189
1997	30.5570373535156
1998	31.0969753265381
1999	31.6320724487305
2000	33.7
2001	31.5
2002	33.1
2003	31.6
2004	34.1
2005	34.5
2006	33.9
2007	35.5
2008	36.1
2009	36.6
2010	37.2
2011	37.8
2012	37.9
2013	38.9
2014	39.6
2015	40.8
2016	40.4
2017	43.3
2018	44.4
2019	45.4
2020	46.3
2021	47.2
2022	49.3