This is not necessarily a new issue. It's part of a trend. The worry is that we're not making much progress. Why is that? The role of scientists or engineers is not well understood in K-12, so they don't necessarily see that as a career. It starts before they get to university, because by the time they get to grade 12, they already know their choices.
Evidence of meeting #31 for Human Resources, Skills and Social Development and the Status of Persons with Disabilities in the 41st Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was students.
A recording is available from Parliament.