Year	% (national estimate)
1994	37.957
1995	38.431
1996	40.444
1997	40.031
1998	35.832
1999	31.347
2000	28.518
2001	27.846
2002	28.292
2003	29.045
2004	27.978
2005	27.994
2006	29.067
2007	30.9
2008	30.842
2009	26.707
2010	23.648
2011	24.835
2012	24.105
2013	24.456
2014	28.196
2015	28.442
2016	31.893
2017	32.391
2018	34.034
2019	31.622
2020	28.494
2021	25.587
2022	26.528
2023	25.424