the aggregate value of the policy based loans made by such bank to the government of a particular country (other than for the purpose described in
section 286hh(b) of this title) in any fiscal year of such bank beginning after
June 30, 1989, and occurring during any period of 3 consecutive fiscal years of such bank (determined after disregarding any such fiscal year in which such bank did not make a policy based loan to such government), to 50 percent of the aggregate value of all loans made by such bank to such government during such 3-year period;