Burkina Faso, formerly (5,5)

I think it could be either:

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5,5

10*

upper volta

(Other definitions for upper volta that I've seen before include "Former name (until 1984) of Burkina-Faso" , "Former name of Burkina Faso; popular vet (anag.)" , "old country" , "Pre-1984 name for Burkina Faso" .)

I've seen this clue in the Sydney Morning Herald.

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