12.0.6. For the purposes of sections 12.0.1, 12.0.2 and 12.0.3, the cumulative growth of the nominal gross domestic product (GDP) of Québec is determined by the sum of the annual changes of the nominal GDP of Québec for the years concerned.
For the purposes of section 12.0.4, the annual change in the Consumer Price Index for Québec corresponds to the change between the average of the indices for the months of April to March for each annual period referred to in section 12 and the average of the indices for the previous months of April to March.