For the purposes of this sub-section :
1° The turnover share of the group or the lead company of the cartel means the ratio between the average turnover resulting from the programming of independent establishments within the meaning of Article 919-68 achieved by this group or this lead company over a given period defined in 2° and the sum of the average turnover resulting from the programming of independent establishments within the meaning of the same Article achieved over this same period by all the groups and lead companies of the cartels eligible for exceptional aid;
2° Average sales are determined :
a) For groupings and cartels created before 1 January 2017, by taking into account the period between 1 January 2017 and 31 December 2019;
b) For groupings and cartels created between 1 January 2017 and 31 December 2017, by taking into account the period between 1 January 2018 and 31 December 2019;
c) For groupings and cartels created between 1 January 2018 and 31 December 2018, by taking into account the period between 1 January 2019 and 31 December 2019.