Year	% (national estimate)
1993	58.711
1994	58.996
1995	59.005
1996	58.902
1997	58.25
1998	57.088
1999	55.686
2000	55.106
2001	55.118
2002	55.412
2003	54.802
2004	54.266
2005	54.658
2006	55.031
2007	55.647
2008	55.933
2009	54.768
2010	54.188
2011	54.351
2012	54.549
2013	55.154
2014	55.687
2015	56.425
2016	57.551
2017	58.478
2018	59.203
2019	59.164
2020	58.268
2021	58.153
2022	58.529
2023	58.402