I would think it will be at least several years before interest rates rise significantly (several percent).
Today's Vancouver Sun has an article titled "Growing demand for resources to trigger 'tsunami' of investments". This will in turn put upward pressue on the Canadian $ which the federal government already feels is too high. As stated earlier, the only way the Canadian government can raise interest rates without undo additional upward pressure on the $ is if the American interest rates go up in tandem, and considering the state of the American economy, it is unlikely that American interest rates will go up anytime soon.
JD