Source. 1990, 255:1. 1998, 167:8, eff. July 1, 1998. 2002, 256:1, eff. Jan. 1, 2003. 2005, 177:47, eff. July 1, 2005. 2006, 259:1, eff. one day after passage of state operating budget for biennium ending June 30, 2009. 2007, 263:66, eff. June 29, 2007.