Year	% (national estimate)
1992	66.92849975612774
1993	65.01590578195102
1994	63.55029314981521
1995	63.40569828899745
1996	62.63388349314268
1997	61.49910593580658
1998	61.54956745853715
1999	62.148431706582286
2000	62.3885477258727
2001	62.13728169605619
2002	61.36337430856779
2003	61.0367893938195
2004	60.9780947872992
2005	61.09676884380102
2006	61.42353940720973
2007	62.15697178058983
2008	63.17143690637724
2009	61.43894263955346
2010	61.56715628044151
2011	61.80144203069814
2012	61.67419702950816
2013	61.46839842590202
2014	61.859054714920795
2015	62.394593393783566
2016	62.721618227817615
2017	62.697059385804
2018	62.89768868261193
2019	63.1326827366036
2020	61.82602449911005
2021	61.877933326996356
2022	63.705975815574995
2023	62.74773124957324