Year	% (national estimate)
1981	68.96
1985	64.98
1991	56.69
1994	51.1
1996	37.192
1998	45.4
2000	41.78
2001	41.25
2006	46.68
2009	43.222
2010	42.35
2013	49.82
2019	39.633
2020	42.682
2021	39.967
2022	41.63
2023	45.451