Original rule filed September 6, 1990; effective December 29, 1990. Amendment filed October 27, 1992; effective January 28, 1993. Amendment filed April 4, 1994; effective August 28, 1994. Repeal and new rule filed August 31, 2004; effective December 29, 2004. Repeal filed March 26, 2020; effective 6/24/2020.