1998—Subsec. (a). Pub. L. 105–220 substituted “1999 through 2003” for “1993 through 1997”.

1992—Subsec. (a). Pub. L. 102–569 substituted “1993 through 1997” for “1987 through 1992”.

1991—Subsec. (a). Pub. L. 102–52 substituted “1992” for “1991”.

1988—Subsec. (a). Pub. L. 100–630 substituted “1991” for “1990”.

1986—Subsec. (a). Pub. L. 99–506 amended first sentence generally. Prior to amendment, first sentence read as follows: “There are authorized to be appropriated $4,000,000 for the fiscal year 1984, $4,200,000 for the fiscal year 1985, and $4,300,000 for the fiscal year 1986 to carry out the provisions of this chapter.”