Year	% (national estimate)
1989	83.561998446803
1990	81.38990938035758
1991	80.34611090435429
1992	78.29595047193749
1993	78.3007751126008
1994	78.12126387702818
1995	78.45937656230998
1996	79.6307760031915
1997	80.36902601330914
1998	75.95801207080771
1999	76.76064715679276
2000	79.20251489080078
2001	80.1535373347022
2002	79.3926516432216
2003	78.46209094581855
2004	80.78846095572862
2005	82.60447634744837
2006	80.96814721750056
2007	79.11343314161947
2008	79.63081488377507
2009	80.53261493618336
2010	82.29354920615954
2011	81.86910940877212
2012	81.07918300462339
2013	81.02021117903419
2014	79.25377468060397
2015	81.04989529929958
2016	80.52715291979095
2017	81.0828744882112
2018	81.25457514499689
2019	82.29141466607847
2020	81.99675694128356
2021	83.38411799207472
2022	84.94494101824091
2023	86.66219558200947