Citizenship Revocations 1947-2017

I would like to know how many Canadian citizens have had their citizenship revoked since 1947, and on what grounds. There is very little data on your site regarding enforcement outcomes. For instance, I cannot determine the source of the data being used in this news article that suggests the number of citizenship revocations had drastically increased while Stephen Harper was Prime Minister: http://www.cbc.ca/news/politics/3-100-citizenships-ordered-revoked-for-immigration-fraud-1.1152606. Year by year figures would be very useful to the academic community that is studying this issue.