In terms of the impact of the drop in WTI on GDP, and then on government revenue, recognizing it's not a linear formula, there's been some analysis that a dollar drop in WTI would lead to about a billion-dollar drop in GDP, depending on where it is in the curve. But certainly for each dollar, there would be a drop commensurately in terms of federal government revenue.
The federal economic update in the fall was based on $81-a-barrel oil. What do you think the impact is going to be on federal revenue, based on current levels?