In order to pay for the United States contribution to the Asian Development Fund provided for in this section, there are authorized to be appropriated, without fiscal year limitation, $378,250,000 for payment by the Secretary of the Treasury: Provided, however, That not more than $111,250,000 of such sum may be made available for the fiscal year 1982, and not more than $44,500,000 of such sum may be made available for the fiscal year 1983.