Premiership History
| Year | 1st Grade | 2nd Grade |
| 1988 | TSC | |
| 1989 | WC | NC/TSC |
| 1990 | NC | |
| 1991 | NC | |
| 1992 | TSC | |
| 1993 | TSC | |
| 1994 | TSC | |
| 1995 | TSC | NC/TSC |
| 1996 | NC/TSC | |
| 1997 | TSC | TSC/TGS |
| 1998 | TSC | TGS |
| 1999 | NC/TSC | |
| 2000 | SIC | |
| 2001 | NC | |
| 2002 | TSC | TSC |
| 2003 | WC | NC |
| 2004 | TSC | NC |
| 2005 | TSC | |
| 2006 | TGS | |
| 2007 | NC | NC/SAC |
| 2008 | SIC | SJC |
| 2009 | SAC | SIC |
| 2010 | SAC | SIC |
| 2011 | SIC | TSC/SIC |
| 2012 | NC | CS |
| 2013 | NC | NC |
| 2014 | NC | NC |
| 2015 | NC | NC |
| 2016 | TSC | NC |
| 2017 | TSC | NC |
| 2018 | NC / TSC | NC / TSC |