Haven't been to FB to hunt for clues, but if I were a betting man my money'd be on either '75 or '78.
ETA: yup, '78 it is. The usual overplayed suggestions ("Baker Street", Bob Seger, The Cars) from Fogheads; but one woman asked for Barry Manilow which I wholeheartedly seconded. (and that was before I discovered tomorrow is Mr Manilow's birthday)