The numbers are as given in "Bank of Canada Issues 1969-1989" by J. Graham Esler, CNRS Transactions 1989 pp 65-73.
Footnote 2 on page 73 explains, "Some notes printed from steel engraved plates were printed and numbered after the notes with lithographed backs had been introduced. Hence, the last note with a steel engraved back has a number higher than the first note with a lithographed back."