That's an excellent question.
I think the 6% figure only applies to direct emissions from upgraders, steam plants, and so on. I think if you were to include the larger footprint, say, of natural gas drilling and development, 20% of the country's natural gas is being consumed every year in the tar sands. And if you were to include its carbon footprint in terms of compressors, emissions, fugitive emissions, leaks, construction of pipelines, then you'd have a much larger figure than 6%.