Year	% (national estimate)
1989	77.923
1990	75.951
1992	73.623
1995	70.449
1996	66.54
1997	66.283
1998	64.185
1999	62.944
2001	61.674
2002	62.029
2003	61.184
2004	62.734
2005	62.908
2006	62.614
2007	62.597
2008	62.899
2009	61.113
2011	58.874
2012	57.072
2013	55.974
2014	54.904
2015	52.474
2016	47.768
2017	46.939
2018	47.326
2019	48.51
2020	42.81
2021	46.135
2022	51.497
2023	50.978