Source: L. 72: p. 275, § 4. C.R.S. 1963: § 40-7-302. L. 77: (1) amended, p. 965, § 36, effective July 1. L. 94: (2) amended and (3) and (4) added, p. 1721, § 18, effective July 1. L. 95: (2) to (4) amended, p. 1254, § 15, effective June 3. L. 2002: (2)(b), (3), and (4) amended, p. 1587, § 21, effective July 1. L. 2003: (2) and (4) amended, p. 1435, § 31, effective July 1. L. 2010: (1) amended and (5) added, (HB 10-1334), ch. 359, p. 1708, § 2, effective August 11.