It was because it wasn't set arbitrarily and it wasn't set politically; it was widely researched by the national round table with environmentalists and leading industry officials. Again, that's what's in our overarching notice of intent. We are still talking to--and I'm surprised that you don't know this--and still in negotiations with industry on what baseline to adopt, whether it's 1990, 2003, or 2001. There are advantages and disadvantages to all of them.
On December 11th, 2006. See this statement in context.