Year	% (national estimate)
1989	48.32
2002	40.76
2004	36.31
2006	35.96
2009	37.67
2010	44.229
2011	43.866
2012	39.065
2013	39.716
2014	37.563
2015	37.198
2016	34.77
2017	30.445
2018	32.084
2019	30.235
2020	33.832
2021	32.834