I am sure that the MSCs know and that each contract specifies their required performance. I am also certain that no MSC wants to share that information with its competitors. There have been shoppers on this forum who say that for a particular shop "they know" what percentage must be done because a scheduler told them. Maybe yes, maybe no. There is certainly no table that reports this, and I am certain that there will never be such a table to look at.
Some programs are 100% completion, and those are the ones where the money can really be made if one is in the right place at the right time. Others have a certain percentage that have to be done each cycle. The huge money can only be made in those projects with locations that go multiple consecutive cycles without being evaluated. This is the case with most of the tech retail, tech hardware, and mobile phone company shops that clearly don't have to have all locations done in one cycle. However, I have occasionally seen locations for asuch as $70 out of the blue when they had never been hightler than $20 for months. They had not been done at all in several cycles.