[nickma]

In 92- 126 won
93- Nashua BG who is now team 811 won
94- Procter & Gamble & Walnut Hills High School (Cincinnati, OH)
95- Raychem Corporation & Woodside HS (Menlo Park, CA)
96- 73 won
97- 71 won
98- 45 won
99- 1, 48, 176 won
00- 25, 232, 255 won
01- 71, 125, 279, 294, 365 won
02- 66, 71, 173 won
03- 65, 111, 469 won
04- ???

Finalist were
92- Dorhery High/ WPI now team 190 (I think)
93- Sorry dont know
94- Texas Instruments, Inc. & Denison High School (Sherman, TX)
95- 126
96- E-Systems ECI Division & Lakewood High School (St. Petersburg, FL)
97- Sorry dont know
98- 121
99- 45, 84, 111
00- 102, 126, 131
01- 33, 111, 144, 254, 349
02- 180, 308, 311
03- 25, 343, 494
04- ???

I wasn't able to find the 92, or 97 finalist but here is everything else.
As you can see 71, 111, and 126 have the most national metals.