Year	% (national estimate)
1990	62.9
1991	64
1992	63
1993	62.4
1994	60.2
1995	57.3
1996	57
1997	59.9
1998	59.9
1999	59
2000	63.6
2001	59
2002	59.1
2003	64.3
2004	66.242
2005	67.684
2006	68.793
2007	69.6
2008	69.204
2009	68.174
2010	68.956
2011	69.787
2012	69.283
2013	68.862
2014	67.768
2017	65.593
2018	65.182
2019	64.856
2020	59.243
2021	65.531
2022	67.347
2023	68.158