Year	% (national estimate)
1992	58.9505325169614
1993	61.68737227188632
1995	57.76987882668939
1996	57.22776460972042
1997	58.12205551459816
1998	58.04384773394824
1999	57.91505296558332
2001	58.48710029853533
2002	58.39928887756157
2003	58.16258077701443
2004	59.404518140948966
2005	59.54740443072111
2006	60.73631267833602
2007	59.981360738531066
2008	60.588883847682496
2009	60.018316835117794
2011	60.01821517444236
2012	59.84102430087628
2013	59.787698974843615
2014	59.59019689988555
2015	59.61250820098838
2016	58.731970218728286
2017	58.59439227525496
2018	58.607325120092625
2019	58.850657566698374
2020	53.53804475699799
2021	56.58777989756576
2022	58.795434357397795
2023	58.8070108597226
