Year	% (national estimate)
1993	58.42
1994	57.98
1995	60.95
1996	60.818
1997	61.476
1998	62.11
1999	60.921
2000	60.222
2001	62.015
2002	61.999
2003	60.263
2004	62.823
2005	63.055
2006	63.667
2007	64.957
2008	64.391
2009	63.019
2010	61.971
2011	60.035
2012	59.372
2013	58.999
2014	59.63
2015	60.046
2016	59.006
2017	61.796
2018	63.566
2019	63.246
2020	62.133
2021	62.742
2022	63.872
2023	60.894