transferred to the Government of the nation of Puerto Rico once said Government establishes its own social security system. The Government of the nation of Puerto Rico may not use these funds for any purpose other than the establishment and operation of a social security system. Upon the transfer described herein, the obligations of the United States Government under the Social Security Act with respect to such residents of the nation of Puerto Rico shall cease. (c) Other Federal transfer payments All other Federal transfer payments to individuals and to the Government of the territory of Puerto Rico shall be maintained in the form of annual block grants to be used discretionally by the Government of the nation of Puerto Rico— (1) during the 10 fiscal years following the proclamation of international sovereignty through free association, the annual block grants shall amount to the annual aggregate funding of all programs which currently extend to the territory of Puerto Rico, or of all programs which shall have been extended to the territory of Puerto Rico during the fiscal year immediately prior to the proclamation of international sovereignty through free association, whichever shall be greater