Year	% (national estimate)
1992	55.87074480410716
1993	54.197953366590106
1994	53.20019763145369
1995	53.21962493034405
1996	52.45983390549854
1997	51.500786980151695
1998	51.551069372490666
1999	52.71270768382604
2000	53.15756313702323
2001	53.22549286711426
2002	53.04293778009405
2003	52.8975518131735
2004	53.13988329363419
2005	53.251967648812396
2006	53.651862389543396
2007	54.33538040440801
2008	55.04762934566536
2009	54.44850746796188
2010	54.67784970592944
2011	55.0525452773978
2012	55.08343261673359
2013	55.02916346174796
2014	55.21860932934233
2015	55.84100528945366
2016	56.05527695062903
2017	55.65513237276115
2018	56.101363944527684
2019	55.931869926867975
2020	54.3403876829961
2021	54.683433558360164
2022	56.75820507865663
2023	55.66717540851273