Year	% (national estimate)
1989	55.33
1990	60.398
1991	60.152
1992	61.264
1993	59.251
1994	62.108
1995	58.32
1996	54.807
1997	51.329
1998	46.754
1999	43.004
2000	43.161
2001	38.826
2002	37.396
2003	48.537
2004	47.039
2005	41.152
2006	40.865
2007	43.538
2008	44.496
2009	43.794
2010	41.16
2011	43.438
2012	44.265
2013	41.382
2014	41.38
2015	43.852
2016	44.159
2017	45.842
2018	47.398
2019	44.198
2020	42.855
2021	40.541
2022	41.328
2023	40.942