| Year | Submissions | Accepted | Ratio | Participants | Location |
|---|---|---|---|---|---|
| 1999 | 42 | 27 | 64% | 158 | USA |
| 2000 | 51 | 25 | 49% | 168 | USA |
| 2001 | 66 | 31 | 47% | 214 | France |
| 2002 | 101 | 39 | 39% | 179 | USA |
| 2003 | 111 | 32 | 29% | 233 | Germany |
| 2004 | 125 | 32 | 25% | 189 | USA |
| 2005 | 108 | 32 | 30% | 234 | Scotland |
| 2006 | 112 | 32 | 26% | 250 | Japan |
| 2007 | 99 | 31 | 31% | 268 | Austria |
| 2008 | 107 | 27 | 25% | 252 | USA |
| 2009 | 148 | 29 | 20% | 312 | Switzerland |
| 2010 | 108 | 30 | 28% | 361 | USA |
| 2011 | 119 | 32 | 27% | 316 | Japan |
| 2012 | 120 | 32 | 27% | 410 | Belgium |