"The Advisory Council on Economic Growth" is probably part of the Century Initiative. A group that wants Canada to have a population of 100 million by 2100 for some economic reason. But of course they don't want to increase the birth rate, this is taken from their website... 

"To get Canada’s population to 100 million by 2100, immigration levels would need to increase steadily but not dramatically. A multi-year plan to increase immigration to 1.3% of population (415,000 – 450,000 entrants per year over the next 5-10 years) is more than adequate. At various times in Canada’s history we have exceeded these levels with no harmful effects." "The 100 Million Scenario leads to higher economic growth – estimated to become 2.3% per year by 2050 and 2.6% per year by 2100."

http://www.centuryinitiative.ca/2016/10/02/cboc/

To quote David Suzuki, a strong economy is not an end but a mean. Do we want our economy to be a never ending incoming door?