African-American % by state, by decade

[CountyTy90]

I've done some similar studies on counties in individual states starting with the 1980 Census which is when real good data on Hispanics starts. I've done Texas, California, and Rhode Island so far and the changes are fascinating, especially in Texas and California. I've been wanting to do another state; I see that South Carolina was extremely black for a long time; maybe I'll take a look at it.