(As amended Feb. 28, 1966, eff. July 1, 1966; Apr. 24, 1972, eff. Oct. 1, 1972; Apr. 28, 1982, eff. Aug. 1, 1982; Pub. L. 98–473, title II, § 209(a), Oct. 12, 1984, 98 Stat. 1986; Mar. 9, 1987, eff. Aug. 1, 1987; May 1, 1990, eff. Dec. 1, 1990; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 27, 1995, eff. Dec. 1, 1995; Apr. 29, 2002, eff. Dec. 1, 2002; Apr. 12, 2006, eff. Dec. 1, 2006; Apr. 23, 2012, eff. Dec. 1, 2012; Apr. 25, 2014, eff. Dec. 1, 2014.)