Year	% (national estimate)
1990	50.694
1991	48.944
1992	47.312
1993	45.788
1994	46.617
1995	45.272
1996	50.996
1997	52.458
1998	56.22
1999	55.753
2000	56.548
2001	56.919
2002	57.895
2003	56.018
2004	56.895
2005	53.65
2006	52.938
2007	56.169
2008	58.172
2009	54.165
2010	52.658
2011	52.287
2012	53.781
2013	53.986
2014	52.058
2015	51.712
2016	50.125
2017	49.112
2018	49.793
2019	50.381
2020	49.7
2021	55.342
2022	59.421
2023	59.348