To make payments under grants under sections 300t–12 and 300t–13 of this title there are authorized to be appropriated $30,000,000 for the fiscal year ending September 30, 1980 , $50,000,000 for the fiscal year ending September 30, 1981 , and $75,000,000 for the fiscal year ending September 30, 1982 , except that in any fiscal year not more than 10 percent of the amount appropriated under this section may be obligated for grants under section 300t–13 of this title . (July 1, 1944, ch. 373, title XVI, § 1644, as added Pub. L. 96–79, title III, § 301(a) , Oct. 4, 1979 , 93 Stat. 640 .)