Source: L. 67: p. 663, § 8. C.R.S. 1963: § 138-10-8. L. 73: p. 1479, § 4. L. 81: Entire section amended, p. 1402, § 3, effective June 9. L. 83: Entire section amended, p. 1519, § 5, effective March 22; (3) added, p. 917, § 3, effective April 28; (2) amended, p. 2098, § 8, effective October 13. L. 84: (2) amended, p. 1141, § 2, effective June 7. L. 86: (2) repealed, p. 1220, § 28, effective May 30. L. 87: (3) amended, p. 1206, § 2, effective May 6; (3) amended, p. 1215, § 12, effective May 7; (3) amended, p. 987, § 13, effective July 1. L. 90: (4) added, p. 1441, § 2, effective May 4. L. 91: (3) amended, p. 1982, § 3, effective April 20. L. 97: (5) added, p. 1424, § 1, effective June 3. L. 2000: Entire section amended, p. 1430, § 1, effective May 31. L. 2001: (3) amended, p. 1275, § 40, effective June 5; (3) amended, p. 973, § 2, effective August 8. L. 2002: (6) and (7) added, p. 1944, § 2, effective August 7. L. 2003: (3) amended, p. 884, § 6, effective August 6; (3) amended, p. 2475, § 30, effective August 15. L. 2004: (3) amended, p. 1931, § 3, effective August 4. L. 2005: (3) amended, p. 1043, § 6, effective June 2. L. 2007: (5.5) added, p. 305, § 1, effective March 30; (3) amended, p. 430, § 3, effective April 9; (3) amended, p. 584, § 1, effective April 19; (3) amended, p. 1201, § 17, effective July 1; (3) amended, p. 1460, § 3, effective August 3. L. 2008: Entire section repealed, p. 988, § 1, effective August 5.