Year	% (national estimate)
1993	49.469
1994	49.837
1995	49.823
1996	49.442
1997	48.824
1998	47.669
1999	46.634
2000	46.179
2001	46.208
2002	46.337
2003	45.778
2004	45.534
2005	45.684
2006	46.083
2007	46.424
2008	46.554
2009	45.701
2010	45.147
2011	45.566
2012	45.936
2013	46.695
2014	47.101
2015	48.138
2016	49.441
2017	50.418
2018	51.296
2019	51.335
2020	50.279
2021	50.176
2022	50.717
2023	50.17