The Corporation shall make, print, and make public an annual report of its operations during each year, send a copy thereof, together with a copy of the account and balance sheet and auditor's report, to the Commission and to both Houses of Congress, and provide one copy of such report but not more than one on the application of any person and on receipt of a sum not exceeding $1: Provided, That the board of directors in its discretion may distribute copies gratuitously.