| 1983 Mr. L Kurth | 1996 Ms. D Ross | 2009 Miss. S Cicerale |
| 1984 Mr. D Cohen | 1997 Ms. L Wakeling | 2010 Miss. Q Sui |
| 1985 Mr. F Van Doore | 1998 Ms. B Mossel | 2011 Miss. J Stewart |
| 1986 Ms. P L Pek | 1999 Mr. S McGrane | 2012 Miss. S Anantanawat |
| 1987 Ms. L Murray & Mrs. S Rogers | 2000 Ms. A Gopel | 2013 Mr. R Adjonu |
| 1988 Mr. J Cox | 2001 Ms. S Siriamornpun | 2014 Ms. L Blake |
| 1989 Mr. P Britnell | 2002 Mr. C Miller | 2015 Ms. D Eratte |
| 1990 Ms. C Holm | 2003 Dr. M Solina | 2016 Miss. J Tan |
| 1991 Ms. L Benham | 2004 Mr. C Iyer & Ms. L Rivas | 2017 Ms. Julia Low |
| 1992 Ms. E Gatto | 2005 Dr. B Woonton | 2018 Not Awarded |
| 1993 Mr. D A Gutzke | 2006 Ms. S Callegari | 2019 Not Awarded |
| 1994 Mrs. J L Hill & Ms. N K Squires | 2007 Miss. L Ong | |
| 1995 Ms. K Janes | 2008 Mr. H Dircks |