Year	% (national estimate)
1996	82.371
1997	77.842
1998	77.44
1999	82.542
2000	79.06
2001	83.918
2003	85.157
2004	80.42
2007	87.42
2008	86.094
2009	86.641
2010	87.93
2011	88.787
2012	73.71
2013	86.334
2014	86.1
2015	86.073
2016	87.552
2017	86.746
2019	82.538
2020	87.753
2021	85.496