Year	% (national estimate)
1961	17.13
1974	3.88
1981	4.28
1984	7.74
1985	7.85
1986	8.3
1989	60.61
1991	59.63
1996	53.25
2000	52.48
2003	32.33
2006	22.089
2010	34.528
2013	37.74
2016	23.61
2017	26.347
2022	18.334