I don't know that they've skyrocketed. They are trending upward, there's no question about that, but look at where they are. Where are they occurring? The number of collisions is down, but the number of derailments on main lines and on non-main line track is up, and that's where we say we have to attack it.
I'd have to get back to you on this, but it seems to me the whole SMS idea hasn't been around that long. The act came in in 2000.