Unlke the Nauruans they have not pissed it away on breweries, pubs, casinos, ships and (so far) airlines.
I seem to recall they dropped $20m (or more) some time back (late 1970's?) with the Air Tungaru 727-100.
Had a huge payout from the Brits from the Ocean Island (Banaba) settlement that went pretty quickly.
The aircraft went to Bloodstock after it's Kiribati working life; a fairly interesting tale.