translate English to French: It is important to emphasize that the most meaningful interpretation of results is done by assessing both year-to-year variance in annual indices as well as overall magnitude and direction of trends.
Soulignons que, pour obtenir l’interprétation des résultats la plus significative possible, il faut évaluer aussi bien la variance interannuelle des indices annuels que l’ampleur et l’orientation globales des tendances.