This may seem like a bit of a fudge, but noting
the various average margins I've already calculated above / previously, it's entirely justified to assert Saga's generated a 26 % long term average adjusted margin, however you want to slice & dice it.
The U.S. government's recommendation is 5 - 11 %, based on
various factors.3 The World Health Organization recommends a similar amount.4 And these recommendations are padded with generous safety
margins, to cover people who need more protein than
average.