Thank you. That helps answer a question there, that we have made at least a technical decision. Okay, everything is going up in cost. As we continue to delay or defer this, the sense that I have is that this is not really an option for us. We're going to have to bite the bullet on this. For every year that we put this off, Mr. Chairman, how much more is it costing us? What's the inflation rate on this stuff? Are we unnecessarily deferring or delaying this necessary decision? Thank you.