The numbers reporting Jewish ethnicity declined by about half
http://www.cbc.ca/news/politics/jewi...bers-1.4381585
(Obviously the Jewish population didn't decline by half - it's just that a lack of a religion question in the "6" years and the droppin of Jewish out of the top 20 responses means that few reported "Jewish" won't be an example listed as an ethnic origin on the census form.