(As amended Feb. 28, 1966, eff. July 1, 1966; Dec. 4, 1967, eff. July 1, 1968; Apr. 29, 1985, eff. Aug. 1, 1985; Mar. 9, 1987, eff. Aug. 1, 1987; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 27, 1995, eff. Dec. 1, 1995; Apr. 29, 2002, eff. Dec. 1, 2002; Apr. 26, 2011, eff. Dec. 1, 2011; Apr. 26, 2018, eff. Dec. 1, 2018.)