I'm not sure I could make that policy statement, but I think one might be able to draw that conclusion. My view would be that the economy is productive in many different ways, and certainly the resource economy contributes substantial amounts. Those three provinces that you reference as contributing more than others tend to have fairly large resource economy aspects and energy aspects, but large parts of the economies of other provinces contribute as well, so I can't really comment on the complete transfer payment aspect.
On April 18th, 2013. See this statement in context.