Posted 30 September 2004 - 19:13
1971
GB 183 points (Paul Smart/BSA-Triumph 76, Ray Pickrell/BSA-Triumph 76, etc.)
USA 137 (Dick Mann/BSA? 46, etc.)
1972 (6 races)
GB 255 (Ray Pickrell 69, etc.)
USA 212 (Cal Rayborn/Harley-Davidson 69/3 wins, etc.)
1973
GB 416 (Peter Williams 84, etc.)
USA 398 (Yvon DuHamel 84, etc.)
1974 (6 races)
GB 416 (Barry Sheene/Suzuki 750, Paul Smart/Suzuki 750, Stan Woods/Suzuki 750, Peter Williams/Norton 750, Percy Tait/Triumph 750, Mick Grant/Yamaha 700, Barry Ditchburn/Yamaha 700 - reserve: Ron Chandler/Triumph 750)
USA 401 (Kenny Roberts/Yamaha 700 4 wins, Gene Romero/Yamaha 700, Gary Fisher/Yamaha 700, John Long/Yamaha 700, Yvon DuHamel/Kawasaki 750, Art Baumann/Kawasaki 750, Gary Nixon/Suzuki 750, Dave Aldana/Norton 750 - reserve: Jim Evans/Yamaha 700)
1975 (4 races?)
USA 278 (Dave Aldana 51, Don Castro, Kenny Roberts, Gene Romero, Steve McLaughlin, Pat Hennen, Steve Baker, Phil McDonald, Randy Cleek)
GB 243 (Pat Mahoney 45, Dave Potter, Percy Tait, Stan Woods, Mick Grant, Barry Ditchburn, Dave Croxford, John Newbold, Charlie Williams)
1976 (6 races)
GB 412 (Barry Sheene 77, Phil Read, Mick Grant, Barry Ditchburn, Dave Potter, John Williams, Dave Croxford, Steve Parrish - reserve: Ron Haslam)
USA 384 (Steve Baker 92/4 wins, Kenny Roberts, Gary Nixon, Pat Hennen, Gene Romero, Randy Cleek, Ron Pierce, Pat Evans - reserve: Marty Lunde)
I have more detailed results for later events, but I suspect you're after the earlier ones.