Year	% (national estimate)
1997	33.63
2004	39.02
2007	48.04
2009	48.19
2010	50.8
2011	50.39
2012	50.92
2013	52.31
2014	54.32
2015	59.67
2016	60.46
2017	57.63
2018	57.63
2019	57.38
2020	56.61
2021	59.33