translate English to French: The rate of return to a non-university post-secondary diploma for women reached a peak of 16.0% in 1984 and subsequently trended downward to a low of 8.9% in 1993, a difference of more than seven percentage points between high and low points.
Le taux de rendement du diplôme d’études postsecondaires non universitaires pour les femmes aurait atteint un sommet de 16,0 % en 1984 et aurait eu tendance à diminuer par la suite, atteignant un creux de 8,9 % en 1993.