No, I don't know any precise numbers, except for those numbers I gave for the Nebraska tractor test. If we go back to it, back in 1981 it was 12 horsepower hours per gallon, and now it's up to 18.7. That is a 50% improvement just in fuel usage.
In terms of the emissions, I think the officials at Environment Canada who worked on what's called the non-spark ignition fuel standards would probably have some pretty good numbers that you could look at, and I know they work hand in hand with the EPA on the tier three standards. They would probably be the best resource, and I can get the—