(As amended Apr. 22, 1974, eff. Dec. 1, 1975; Pub. L. 94–64, § 3(35), July 31, 1975, 89 Stat. 376; Mar. 9, 1987, eff. Aug. 1, 1987; Apr. 27, 1995, eff. Dec. 1, 1995; Apr. 24, 1998, eff. Dec. 1, 1998; Apr. 29, 2002, eff. Dec. 1, 2002; Apr. 26, 2011, eff. Dec. 1, 2011.)