Year	% (national estimate)
1982	14.776
1990	20.95
1994	14.836
1995	21.86
1998	17.25
1999	25.98
2000	25.3
2001	22.05
2002	21.62
2003	23.48
2004	25.11
2005	25
2006	18.55
2007	25.6
2008	24.8
2009	17.48
2010	23.43
2011	22.88
2012	22.28
2013	22.71
2014	22.65
2015	22.21
2016	21.19
2021	17.4
2022	16.4