2017 a 2020
Moacir Zanotto
2013 a 2016
Orênia Gomes Goeltzer
2009 a 2012
Moacir Zanotto
2005 a 2008
Orênia Gomes Goeltzer
2001 a 2004
Luis Antonio Zafonatto
1998 a 2000
Luis Antonio Zafonatto
1997 a 1998
Raul Luiz Gobbi
1993 a 1996
João Carlos Zanotto