Year	% (national estimate)
1981	59.36
1985	61.33
1991	45.61
1994	46
1996	34.394
1998	41.2
2000	38.93
2001	37.63
2006	41.789
2009	39.336
2010	38.43
2013	46.2
2019	35.629
2020	37.596
2021	37.96
2022	38.808
2023	42.105