Year	% (national estimate)
1992	60.758
1993	57.978
1994	54.362
1995	52.941
1996	51.914
1997	49.524
1998	47.923
1999	52.013
2000	53.806
2001	53.853
2002	55.506
2003	55.267
2004	56.256
2005	57.201
2006	57.813
2007	58.89
2008	58.531
2009	57.742
2010	58.009
2011	59.172
2012	60.061
2013	59.784
2014	60.289
2015	60.08
2016	60.418
2017	52.842
2018	53.189
2019	52.911
2020	52.067
2021	52.729
2022	53.334
2023	54.415