On stress or pressure, we recognize that an important part of the sustainability equation is the environmental performance of the industry. You referred to comparisons since 1990. If I could just give you some data for our industry, for greenhouse gases total emissions are down 17%, and on an intensity basis it's 29%. That's to the year 2003, which was the last measure I have.
With respect to pollutants, we are down. Benzene is reduced by 75%, NOx by 31%, and sulphur dioxide by 76%. We've gone through this period and we continue to compete while making the investments necessary to make those reductions. Overall energy efficiency has improved over 25%, so for quite some time the industry has actually taken very seriously the need to address these problems.
We recognize that obviously there would be a point at which regulatory requirements, depending on what they were, could become a problem, but we've developed an MOU with the federal and Ontario governments with respect to GHGs, and we'll now be into discussions with the government on the provisions under the Clean Air Act to see where that goes.
I think you've heard this from other industry groups as well, Mr. Chairman. There's a much better story on environmental performance across the manufacturing sector than most people might appreciate, and we're certainly a part of that.