Year	% (national estimate)
2009	39.18043935012294
2010	36.17203608794058
2011	37.052036921965566
2012	35.72177092632867
2013	36.511583047290046
2014	37.122948126994
2015	35.44716379073339
2016	36.71466436375615
2019	38.63608964337269