Well, you could do it yourself. I had thought it might have been posted here years ago - but couldn't find it, so go ahead if you wish.
I searched a bit and came up with a FR post about Bob Dole which quotes a bit of an even earlier article by The New York Times July 1982 similar to the 1987 one. (The article says 57,000 Serbs had left in the last decade which would mean from 1972-1982):
Bob Dole and Yugoslavia; "Concurrent Resolution 150" and Other Puzzle PiecesThe New York Times,
Monday, July 12, 1982
Exodus of Serbians Stirs Province in Yugoslavia
"Serbs .... have... been harassed by Albanians and have packed up and left the region.
"The [Albanian] nationalists have a two-point platform, ...first to establish what they call an ethnically clean Albanian republic and then the merger with Albania to form a greater Albania. "
"Some 57,000 Serbs have left Kosovo in the last decade... The exodus of Serbs is admittedly one of the main problems... in Kosovo..."
Hiya. Nice to see you.