I had to change the the fileformat (converted it to .xls). Then
OriginalData = Import["C:\Users\User\Desktop\suicide.xls"];
and
test = Take[OriginalData[[1]], 50];
test // TableForm
test1 = DeleteCases[test, {x_, 1988., y___}];
test1 // TableForm
Is it this what you are looking for?