Year	% (national estimate)
1980	56.52885784175837
1981	57.02767238763774
1983	56.10543075576246
1984	56.99236328480762
1985	56.62002814773154
1986	57.003436969628964
1987	57.363517839996945
1988	56.184972522792776
1989	56.44775748586782
1990	54.45208795842783
1991	55.03605603917925
1992	53.97562323031896
1993	53.1017877281856
1994	53.05893754303526
1995	52.412411898605846
1996	51.92985963486195
1997	51.590655961832226
1998	51.68901379392225
1999	51.64513019670349
2000	51.51241060479592
2001	51.15051064722166
2002	50.48391626962954
2003	49.76003410011323
2004	49.38919505285095
2005	49.276790605971804
2006	49.172836951478985
2007	48.85268459213103
2008	48.65199872697511
2009	47.85701499011948
2010	47.10741640339004
2011	47.00090823628642
2012	46.92152507103041
2013	46.9621441208326
2014	46.92268755796079
2015	46.911567045776
2016	46.94465883149918
2017	47.03177782278818
2018	47.18189234303501
2019	47.55676445808164
2020	45.26533724980179
2021	47.12604262625646
2022	47.74005546485806
2023	48.419796996014725