Year	% (national estimate)
1990	22.179
1992	25.204
1994	24.382
1996	23.842
1997	24.523
1998	23.374
1999	20.572
2000	20.197
2001	19.289
2002	18.485
2003	19.066
2004	19.925
2005	20.543
2006	20.902
2007	21.71
2008	22.468
2009	22.009
2010	23.936
2011	25.44
2012	25.467
2013	25.031
2014	25.098
2015	24.758
2016	24.607
2017	24.717
2018	24.589
2019	23.8
2020	16.581
2021	17.805
2022	20.782
2023	20.15