During fiscal years 1999, 2000, and 2001, the Secretary may enter into a voluntary, flexible agreement with not more than 6 guaranty agencies that had 1 or more agreements with the Secretary under subsections (b) and (c) of section
1078 of this title as of the day before October 7, 1998. Beginning in fiscal year 2002, any guaranty agency or consortium thereof may enter into a voluntary flexible agreement with the Secretary.