Year	% (national estimate)
1986	50.91393998492627
1987	50.9995480785807
1988	51.25024346001063
1989	51.71282513021384
1990	51.35595628706634
1991	49.84050784861874
1992	48.1592735427921
1993	47.043159682784015
1994	46.60624775657997
1995	46.3549282991735
1996	45.34861632509949
1997	44.53818188856136
1998	44.1264643924155
1999	44.4468967794303
2000	44.6709753754637
2001	43.91743110785618
2002	43.19173261068605
2003	42.69229337797129
2004	42.70060958053114
2005	42.53041125712081
2006	42.46311983820558
2007	43.20647283070402
2008	43.08625694839309
2009	38.88696641497384
2010	38.84851017680143
2011	39.15531197299547
2012	38.29816180210513
2013	38.65873693082227
2014	39.16730117200478
2015	40.232254245788496
2016	40.90594468813873
2017	40.90277076438177
2018	41.312860435120996
2019	41.64667876201338
2020	38.737911448352136
2021	40.882816674511794
2022	42.07378521015382
2023	42.374237099212905