Year	% (national estimate)
1992	59.917
1993	58.913
1994	58.265
1995	58.141
1996	58.398
1997	51.338
1998	51.549
1999	49.759
2000	47.704
2001	46.548
2002	44.74
2003	44.185
2004	44.136
2005	45.305
2006	46.679
2007	48.696
2008	50.509
2009	50.602
2010	50.142
2011	50.374
2012	50.437
2013	50.39
2014	51.447
2015	52.227
2016	53.065
2017	54.011
2018	54.524
2019	54.708
2020	54.679
2021	55.81
2022	56.307
2023	56.502