Year	% (national estimate)
1990	66.07
1991	60.687
1992	52.093
1993	42.418
1994	41.341
1995	36.545
1996	33.843
1997	32.099
1998	33.509
1999	35.425
2000	36.852
2001	46.247
2002	43.982
2003	43.371
2004	39.555
2005	38.959
2006	40.303
2007	42.176
2008	42.164
2009	38.253
2010	38.835
2011	40.903
2012	40.156
2013	41.666
2014	42.762
2015	43.886
2016	44.454
2017	44.899
2018	44.66
2019	43.941
2020	39.591
2021	40.717
2022	44.482
2023	44.79