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SUBMIT YOUR IDEAThere would be different results if countries w/ nulls in 1997 have a history we're looking for and have been filtered out.
Solution attached.
Can finally attach files, although cannot edit my previous reply
Good one and quite relevant to some stuff I need to do for work. I beat my head against the wall for about 20 minutes trying to see why my answer didn't match yours, when I found I had filtered on "<2" instead of "<=2"....