Year	% (national estimate)
1995	68.92
1997	69.049
1998	67.959
1999	66.798
2000	65.801
2001	64.827
2002	59.23
2003	58.614
2004	57.34
2005	56.744
2006	57.477
2007	58.078
2008	58.573
2009	57.998
2010	59.353
2011	57.89
2012	58.943
2013	58.783
2014	59.459
2015	59.613
2016	59.442
2017	60.998
2018	61.878
2019	62.539
2020	61.956
2021	58.103
2022	58.304
2023	58.192