Year	% (national estimate)
1974	16.87
1993	34
1994	29.1
1999	38.69
2001	35.33
2002	30
2003	31.5
2005	33.065
2006	29.506
2007	28.926
2008	29.44
2009	29.508
2010	30.849
2011	30.226
2012	27.971
2013	33.586
2014	34.865
2015	37.759
2016	37.017
2017	37.837
2018	40.537
2019	37.538
2020	43.603
2021	45.85
2022	44.563
2023	34.192