Year	% (national estimate)
1973	24.25092582201773
1983	36.424462965136755
1990	31.214483943438616
1993	34.786107013544324
1996	38.945396145610275
2008	35.47362875048528
2009	31.506849315068493
2011	40.440504739065894
2022	23.266038437292906