Source: L. 69: p. 762, § 36. C.R.S. 1963: § 89-21-36. L. 70: p. 299, § 119. L. 81: Entire section amended, p. 1626, § 36, effective July 1. L. 92: Entire section amended, p. 917, § 180, effective January 1, 1993. L. 2018: Entire section amended, (SB 18-025), ch. 22, p. 275, § 2, effective March 7.