(Added May 1, 1990, eff. Dec. 1, 1990; amended Apr. 30, 1991, eff. Dec. 1, 1991; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 11, 1997, eff. Dec. 1, 1997; Apr. 29, 2002, eff. Dec. 1, 2002; Apr. 12, 2006, eff. Dec. 1, 2006; Mar. 26, 2009, eff. Dec. 1, 2009; Apr. 25, 2014, eff. Dec. 1, 2014.)