Year	% (national estimate)
2007	41.7
2008	43.2
2009	41.3
2010	40.039
2011	39.111
2012	40.128
2013	40.292
2014	43.2
2015	44.296
2016	44.852
2017	45.876
2018	47.503
2019	48.731
2020	43.81
2021	42.526