This helper template calculates periods for French certifications for albums and videos, based on: A propos des certifications (неопр.). SNEP. Дата обращения: 26 мая 2021.

Parameters: year, month

It returns:

Before July 1985 Before June 2006 Before July 2009 Before January 2018 January 2018 and onward
1 2 3 4 5

Returns 0 if the data provided is not sufficient.