Year	% (national estimate)
1979	53.01302182066921
1980	53.11921919512154
1981	52.80302670482392
1982	52.70415760280917
1983	53.08994938809427
1984	54.00985908555678
1985	54.20946465091356
1986	54.56319462391692
1987	54.93944851456909
1988	54.59926355335865
1989	53.65141912329356
1990	54.13317680651665
1991	53.32309964275292
1992	52.3591972328692
1993	51.448772404236706
1994	51.33375113325112
1995	50.63327022188177
1996	50.487714974037004
1997	50.15406674466032
1998	50.687189345269196
1999	50.142998263075654
2000	50.80552113835964
2001	49.66569692011254
2002	49.55158655274106
2003	48.86385675025899
2004	49.49052586872043
2005	49.40052190582434
2006	49.14291560519092
2007	48.75752545158346
2008	48.2993984840885
2009	47.70020338579695
2010	46.75389864240903
2011	46.6172467834795
2012	46.427259363352576
2013	46.69914708595839
2014	46.14337746831488
2015	46.30977008440405
2016	46.47022932773573
2017	46.680648860754864
2018	46.954587230428174
2019	47.52583262785235
2020	45.84040547970416
2021	47.33148175060329
2022	48.84905716951784
2023	49.64585723735551