Estimating the demand for cannabis - ARCHIVED

It is a matter of some speculation what the demand for cannabis will be after the substance becomes available for non-medical use. Statistics Canada has released estimates of household consumption expenditure over the past several decades based largely self-reported use, but this demand is mostly for illegal cannabis used for non-medical purposes. To what extent will the new legal market displace the long-existing illegal market and how large will new demand be, coming from consumers who are not presently using illegal products?