(As amended Feb. 28, 1966, eff. July 1, 1966; Apr. 24, 1972, eff. Oct. 1, 1972; Apr. 22, 1974, eff. Dec. 1, 1975; July 31, 1975, eff. Dec. 1, 1975; Apr. 30, 1979, eff. Aug. 1, 1979, and Dec. 1, 1980; Oct. 12, 1982; Apr. 28, 1983, eff. Aug. 1, 1983; Oct. 12, 1984, eff. Nov. 1, 1987; Mar. 9, 1987, eff. Aug. 1, 1987; Apr. 25, 1989, eff. Dec. 1, 1989; Apr. 30, 1991, eff. Dec. 1, 1991; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 29, 1994, eff. Dec. 1, 1994; Sept. 13, 1994, eff. Dec. 1, 1994; Apr. 23, 1996, eff. Dec. 1, 1996; Apr. 24, 1996; Apr. 17, 2000, eff. Dec. 1, 2000; Apr. 29, 2002, eff. Dec. 1, 2002; Apr. 30, 2007, eff. Dec. 1, 2007; Apr. 23, 2008, eff. Dec. 1, 2008; Mar. 26, 2009, eff. Dec. 1, 2009.)