Year	% (national estimate)
1986	59.5
1991	59.3
1996	69.65
2005	64.484
2006	63.498
2007	63.332
2008	61.492
2009	61.211
2010	59.634
2011	58.991
2012	59.43
2013	61.972
2014	61.725
2015	62.147
2016	61.809
2017	62.735
2018	63.24
2019	63.985
2020	62.292
2021	62.522
2022	62.322