Historical data

Just a mild curiosity of mine, but I’d like to complete a chart of FIRST participation data. I used the archive site Waybackmachine to harvest the data for the number of regionals and team counts. What I lack is estimates for student participation. Anybody have the data or a site where one can find it?

For Inspiration & Recognition of Science & Technology			

Year Game Regionals Teams Students
1992 Maize Craze 1 , 28
1993 Rug Rage 1 , 25
1994 Tower Power 1 , 44
1995 Ramp n Roll 1 , 59
1996 Hexagon Havoc 1 , 94
1997 Torroid Terror 3 , 151
1998 Ladder Logic 5 , 199
1999 Double Trouble 7 , 271
2000 Co-Operation FIRST 10 , 372
2001 Diabolical Dynamics 13 , 515
2002 Zone Zeal 17 , 641
2003 Stack Attack 23 , 787
2004 FIRST Frenzy - Raising the Bar 26 , 927
2005 Triple Play 30 , 991 , 25000
2006 Aim High 33 , 1133 , 28000