From the various sources quoted in the previous post on the traditional groups of priests I obtained the percentage of those traditional priests currently based in France, as shown in table 1.
It is obvious from the above values that there will be a catastrophic decline in the number of non-traditional diocesan priests in France. The interesting result is that by the year 2038, traditional priests will outnumber priests celebrating the new mass. See chart 1.
So in conclusion, if the Roman Catholic faith will be saved from secularism in France, it will be the achievement of the traditional groups of priests celebrating the Traditional Mass such as FSSPX, FSSP and ICRSS.