When I look at this list, I see that in 2016-17, the total number of complaints is at 1018. This means that there were additional complaints. The situation is not improving, even though we meet with people from Air Canada often, we put questions to them, and they tell us that they are very attentive to official language issues. What we see here proves the opposite. In other words, the service Air Canada provides to the linguistic minority is not adequate. That is what I understand from your table
On June 8th, 2017. See this statement in context.