Year	% (national estimate)
1992	52.85
1995	48.4
1996	56.22
1997	55.68
1998	57.01
1999	55.32
2000	55.9
2001	56
2002	51.91
2003	52.83
2004	50.57
2005	55.4
2006	58.25
2007	58.93
2008	59.02
2009	58.16
2010	58.103
2011	58.55
2012	59.4
2013	59.878
2014	58.397
2015	57.77
2016	57.892
2017	57.569
2018	57.428
2019	58.212
2020	56.278
2021	57.004
2022	58.674