Statistics are useful in many ways; in addition to enhancing one's understanding of a subject, they can provide persuasive evidence for a point of view. You can find statistics on just about any topic, but it helps to first ask yourself some key questions about the data you're seeking:
In other words, It's helpful to consider where you might reasonably expect to find the data - this can save you hours of fruitless searching.
The Canadian government makes available online an impressive array of reports and resources related to marketing. To find resources using Google, for example, include "site:gc.ca" in your search, e.g. bakery products market site:gc.ca; for documents produced by the B.C. government, try adding "site:gov.bc.ca" to your Google search, e.g. blueberries market site:gov.bc.ca. In all cases, be sure to check the date of the report, and look for data sources within the report that may be helpful in providing any updates.
Below are other links that you may find useful: