There is authorized to be appropriated, without fiscal year limitation, for payment by the Secretary of the Treasury of the initial United States subscription to twenty-nine thousand eight hundred and twenty shares of the capital stock of the Bank, $359,733,570: Provided, however, That not more than $17,986,679 of such sum may be made available for paid in subscriptions to the Bank for each of the fiscal years 1982, 1983, and 1984.