Year	% (national estimate)
2002	49.79
2004	50.3
2005	47.425
2007	40.948
2008	46.245
2009	47.473
2010	47.426
2011	51.857
2012	49.371
2013	44.102
2014	43.775
2015	45.955
2016	48.477
2017	50.152
2018	52
2019	53.392