D.C. Code § 1-1201
3/3/1901 , 31 Stat. 1279, ch. 854, § 558; 6/29/1906 , 34 Stat. 622, ch. 3616; 2/10/1925 , 43 Stat. 821, ch. 198; 12/16/1944 , 58 Stat. 810, ch. 597, § 1; 6/22/1983 , D.C. Law 5-14, § 304, 30 DCR 2632; 9/24/2010 , D.C. Law 18-223, § 1072, 57 DCR 6242; 9/14/2011 , D.C. Law 19-21, § 9020(b), 58 DCR 6226; 9/20/2012 , D.C. Law 19-168, § 8003, 59 DCR 8025.
.