Year	% (national estimate)
1994	29.7
1995	30.1
1996	27.3
1997	22.4
1998	25.7
1999	29.8
2000	27.416
2001	38.14
2002	36.072
2003	34.776
2004	34.449
2005	36.162
2006	37.792
2007	37.377
2008	41.02
2009	40.11
2010	35.205
2011	38.17
2012	37.691
2013	38.038
2014	37.426
2015	38.267
2016	37.737
2017	38.767
2018	38.217
2019	37.874
2020	36.171
2021	34.55
2022	35.302
2023	37.097