1972 | R. C. Higgins+ | J. McNab+ |
1981 | A. Y. Moore+ | C. Roberts+ |
G. W. Schaible+ | J.D. Sonter+ | |
1985 | E. R. Deaves+ | D. McKinnon+ |
1988 | G. Bond | W. Naughton+ |
J. Shortus+ | ||
1991 | J. Brigstock | M. Schaible+ |
1998 | J. O'Connell | |
2000 | D. Gordon | |
2001 | B. Callaghan+ | |
2005 | B. Daly+ | |
2007 | T. Hogg | |
2010 | M. McKinnon | R. Rees |
2017 | R. Montgomery | W. Brown |