It all depends how quickly countries ratify the agreement. We have 92 out of 110. You have to get a certain percentage of the WTO members. The process is moving ahead well.
As I mentioned in my opening comments, the G20 ministers, when they met in Shanghai in China earlier this month, committed to ratifying the agreement by the end of this year, so if the G20 members get on board and any other outstanding members sign up, in an ideal world we'd have it sometime early next year.