translate English to French: More specifically, their gain has come at the expense of the port of Vancouver, which has seen its share decline from 58.9% in the past five years. Of the six percentage points ceded by Vancouver, Thunder Bay acquired just over two-thirds, and increased its share to 30.9% from 26.8%.
Plus précisément, ce gain s’est réalisé aux dépens du port de Vancouver, dont la part initiale de 58,9 % a décliné au cours des cinq dernières années.