Year	% (national estimate)
1991	61.528710863227275
1993	77.56653992395437
1994	78.1127129750983
1995	74.14012738853503
1996	74.77477477477478
1997	76.14795918367346
1998	77.27272727272727
1999	80.51948051948052
2000	82.66666666666667
2001	70.98781779661017
2003	82.80127693535513
2004	83.73983739837398
2005	79.79002624671915
2006	88.2183908045977
2007	81.01092896174863
2008	79.7595495358393
2009	81.98005698005697
2011	85.0089396231605
2012	87.53898305084746
2013	84.04664104942361
2017	84.72454755640597
2018	84.02242282285444
2019	87.60965509725929
2020	84.65252776877271
2021	85.28719762183181
2022	82.63237718430597