My average according to fitday is about 1250 calories/day. Without exercise, I lost about 1.36 lb/week for the first year banded.
I'm now just into my 2nd year post surgery (was banded 06/09) and have began exercising 4x a week so I can continue losing 1-2 lbs/wk without any long plateaus.
I would probably continue losing about a lb/week even if I didn't exercise but now that I'm under 200 lbs, it's much easier for me to move and be active again, and can begin controlling my weight loss more with exercise.