(As amended Apr. 1, 1979, eff. Aug. 1, 1979; Apr. 25, 1989, eff. Dec. 1, 1989; Apr. 29, 1994, eff. Dec. 1, 1994; Apr. 24, 1998, eff. Dec. 1, 1998; Apr. 29, 2002, eff. Dec. 1, 2002; Apr. 25, 2005, eff. Dec. 1, 2005; Mar. 26, 2009, eff. Dec. 1, 2009; Apr. 28, 2016, eff. Dec. 1, 2016.)