Year	% (national estimate)
2008	40.60525125221621
2009	38.71469187244333
2010	39.81906007112696
2011	39.188685275345875
2012	39.3943598238529
2014	38.24091237202466
2015	39.16172611104375
2016	39.20754620146423
2017	38.199753615910375
2021	37.58610014077717