After following the instructions in the link you provided, we get to this page. The page shows inflation rates for Canada as a whole in the time period from 2007 to 2011. According to this page, the year (of these five years) with the lowest rate of inflation in Canada was 2009.
This can be seen in the lower line of bold faced numbers, under the heading “% change from previous year.” This shows you the rate of inflation for each of the years in question. 2009 is by far the lowest, with an inflation rate of only .3%. 2010 was the next lowest with the much higher rate of 1.8%