Year	% (national estimate)
1996	35.548
1997	38.544
1998	36.236
1999	32.949
2000	31.192
2001	30.318
2002	31.138
2003	28.591
2004	33.808
2005	34.058
2006	34.988
2007	37.606
2008	38.408
2009	35.32
2010	34.076
2011	31.539
2012	27.298
2013	26.525
2014	26.809
2015	29.588
2016	28.607
2017	34.731
2018	35.158
2019	33.273
2020	26.991
2021	29.537
2022	32.264
2023	32.617