Source: L. 65: p. 862, § 6. C.R.S. 1963: § 88-6-6. L. 75: (1) amended, p. 708, § 9, effective July 14. L. 85: (4) and (5) amended and (6) added, p. 1019, § 4, effective March 1; (6) amended, p. 1372, § 53, effective July 1. L. 88: (1) amended, p. 822, § 33, effective May 24. L. 89: (1) and (4) amended, (5) R&RE, and (6) repealed, pp. 1258, 1259, 1260, §§ 7, 8, 11, effective May 2. L. 93: (1), (4), (5)(a), and IP(5)(b) amended, p. 889, § 14, effective May 6. L. 2008: (7) added, p. 61, § 2, effective August 5. L. 2009: (1)(c) and (8) added, (HB 09-1024), ch. 15, p. 85, §§ 2, 3, effective September 1.