The 9m canadians out of work/on CERB have been 'reclassed' as being on the government's payroll and so no longer count as unemployed... Most of them don't even know.
Out of the almost 17 million Canadians on payroll over 9 million lost their job. They corrected this number to about 1 million. You either believe that the unemployment rate is 60% (like before the correction) or 8% (after the correction).
Here is last years dataset https://www.adp.ca/-/media/adpca/redesign2019/images/resource-hub/ner/1120/adp_canada_ner_history_2020_11.xlsx?la=en
and this years:
It's not based on historical data. You pulled that so deep out of your ass that you tickled your tonsils. Maybe someone should travel back in time and tell your mother to lay off the fent when she was pregnant with you, but I doubt that would help.