Year	% (national estimate)
1996	73.303
1997	67.766
1998	57.11
1999	74.793
2000	68.413
2001	77.326
2003	75.379
2007	73.883
2008	70.172
2009	74.21
2010	77.467
2011	78.173
2012	60.739
2013	68.075
2014	68.765
2015	68.827
2016	68.679
2017	68.449
2019	56.997
2020	68.145
2021	63.972