Year	% (national estimate)
1991	44.3
1992	46.6
1993	46
1994	44.8
1995	43.7
1996	52.77
1998	45.4
1999	46.1
2000	54.751
2001	53.117
2002	53.666
2003	52.704
2004	53.27
2005	52.893
2006	54.064
2007	54.26
2008	54.842
2009	52.438
2010	53.751
2011	54.617
2012	55.436
2013	54.912
2014	55.529
2015	57.291
2016	57.903
2017	58.73
2018	60.033
2019	61.045
2020	56.667
2021	58.309
2022	59.744
2023	60.711