Year	% (national estimate)
1993	68.764
1994	68.94
1995	68.957
1996	69.138
1997	68.434
1998	67.254
1999	65.444
2000	64.718
2001	64.7
2002	65.169
2003	64.49
2004	63.629
2005	64.263
2006	64.57
2007	65.453
2008	65.844
2009	64.304
2010	63.701
2011	63.601
2012	63.612
2013	64.053
2014	64.723
2015	65.137
2016	66.074
2017	66.942
2018	67.489
2019	67.351
2020	66.605
2021	66.48
2022	66.68
2023	67.026