(1973 Ed., § 11-2608; Sept. 3, 1974, 88 Stat. 1093, Pub. L. 93-412, § 2; June 15, 1976, D.C. Law 1-69, § 2, 23 DCR 531; 1981 Ed., § 11-2608; Aug. 5, 1997, 111 Stat. 760, Pub. L. 105-33, § 11262(b); Oct. 21, 1998, 112 Stat. 2425, Pub. L. 105-274, § 6(b)(1).)