2008—Subsec. (d)(2). Pub. L. 110–387 substituted “through 2012” for “through 2008”.

2003—Subsec. (d)(2). Pub. L. 108–170 substituted “June 1 of each year through 2008” for “February 1, 1998, and February 1 of each of the six following years”.

2000—Subsec. (d)(2). Pub. L. 106–419, substituted “six following years” for “three following years”.