Year	% (national estimate)
1991	63.1231591149931
1994	74.76419979166614
1995	73.99724797848042
1996	74.99455233953532
1997	74.27802303421198
1998	73.47775679138124
1999	71.44904968403597
2001	71.18768735960765
2002	69.7184982595334
2009	74.27668420447107
2010	72.50021581953412
2011	74.67837097975294
2012	75.36549076946055
2013	75.11447762601306
2014	73.80262129031877
2015	75.51240536461079
2016	75.86731757854186
2019	76.9628628356256