Thanks M'nC it appears that they have 1991 now as an answer and it is correct!
I have noticed that every once it a while they either won't have the right answer, or they will have the right answer but say it is wrong.....I think they must like toying with our 1 point
I usually send them the link where it shows the right answer and they usually fix the trivia. I just wish they'd do a little research before posting a trivia question.