[1979 c.512 §5; 1981 c.894 §18; 1985 c.745 §3; 1987 c.158 §98; 1991 c.711 §3; 1993 c.684 §2; 1995 c.746 §15a; 1997 c.534 §12; 1997 c.656 §6a; 1999 c.365 §2; 2003 c.186 §23; 2007 c.843 §17; 2008 c.29 §2; 2010 c.76 §§8,9,9a; 2011 c. 474 §§27,28,29; renumbered 469B.142 in 2011]
