Year	% (national estimate)
1996	57.86
1997	59.16
1998	59.9
2000	60.403
2001	66.396
2002	61.86
2003	61.636
2004	64.093
2005	64.446
2006	65.537
2007	64.669
2008	63.943
2009	61.063
2010	60.122
2011	59.643
2012	60.431
2013	60.342
2014	60.44
2015	63.284
2016	64.558
2017	65.539
2018	64.308
2019	63.656
2020	56.254
2021	62.031
2022	62.541
2023	62.225