| 2013 | Margaret Millar, Carolyn Woolley, Di Marler, Linda Alexander |
|---|---|
| 2012 | Tony Marinos, Peter Grant, Elizabeth Havas, Gytis Danta |
| 2011 | Yalan Zhang, Ping Wang, Yanhui Sun, Xuefeng Feng |
| 2010 | Peter Kahler - Hashmat Ali |
| 2009 | Peter Holloway - Colleen Tognetti |