Year	% (national estimate)
1979	37.61
1989	34.23
1995	46.18
1998	51.81
1999	38.54
2001	36.39
2002	36.24
2003	35.62
2014	32.5
2015	31.77
2016	31.03
2017	29.99
2018	29.969
2019	31.669
2020	27.907
2021	28.089