I'd be reluctant to put a number on the table. We could certainly look at that.
As my colleague, Wojo, was suggesting, greening is a core element of many projects that we're doing, particularly on the energy source. That's the biggest bang for the buck, if you will. If we can change to lower-carbon sources of energy for heating and cooling....
We have the district heating and cooling project in the national capital area, and we are buying renewable energy certificates across the country as well. Those are the biggest sources of greenhouse gas reductions in our investment portfolio right now.