Year	% (national estimate)
1983	48.69413014787987
1984	49.002119141242105
1985	50.083264440209696
1986	48.48693831167079
1987	48.65814072813237
1988	48.993030361352275
1989	49.45424763732838
1990	50.56716665678839
1991	50.87957958658921
1992	50.21289032927263
1993	49.100935539244645
1994	48.54153250935266
1995	48.62172221647296
1996	48.66601543089076
1997	48.67674368753133
1998	49.261803323669206
1999	50.03922566590837
2000	50.63522242976666
2001	51.14833211540378
2002	51.436623458399126
2003	51.619129796184716
2004	51.48150383103056
2005	51.91754544053372
2006	52.674655176783716
2007	53.40510684325344
2008	53.69311050226209
2009	52.48209003811995
2010	52.02197437269984
2011	52.02596752135197
2012	51.57284782141779
2013	51.20945133344316
2014	51.37480316461705
2015	51.761621866171325
2016	52.48995624665658
2017	53.12876159180134
2018	53.71554683758944
2019	54.23524810897703
2020	53.085591175652354
2021	53.780780667955746
2022	54.92389189909863
2023	54.03171191590427