There are lots of pieces to that. You've heard some of it already today. The perspective that we bring is from the efficiency and productivity of unloading and loading. A lot of that has changed over the last five years. One, we're exporting and importing more cargo and people. Two, the ships are getting larger, as you've heard today, which adds more complexity to managing the actual vessel movements and the loading and unloading process.
Overall, the capacity to export—which is the one I will address right away—is growing. But we're also seeing some of the constraints starting to build, and it's getting more difficult to manage it.