I'm not really sure about metrics per se. Certainly the U.S. is looking at market share, and they're looking at whether the share of Canadian lumber coming across the border is growing or not.
I would say that we've seen demand in the U.S. grow quite substantially over the last few years. The U.S. industry has put on five billion board feet more of lumber. The trouble is that they can't catch up. We have consistently had a gap of about 14 to 15 billion board feet. It was 16 last year because lumber demand was so high. We certainly are watching that.
In terms of the metrics for when would we get back to table, I don't think there are metrics, but there are a couple of things. I've been around this business for about 25 years. It's not my first rodeo. I was around when we were in other negotiations. We've had a number of litigation processes under our belt, usually with some wins. We had a terrific win with the WTO last year. The trouble is you can't appeal it to anyone, because the U.S. won't appoint their folks to the appellate body.
So usually there's a little litigation water under the bridge. There are usually a number of dollars on deposit. The last time it was $5 billion. This time it's already at $7 billion, so that certainly is something that, in my experience, we get back to the table about.
Then there's something else. It was mentioned by someone that lumber isn't really the top priority for the U.S., and certainly right now in the post-pandemic world and with geopolitical instability it won't be at the top of their list, but they'll want something else, and so it becomes a matter of negotiation.
In my experience those are the three things that have to be there. And ultimately, when we get a deal—and when we've gotten a deal in the past—it means the leader of Canada and the leader of the U.S. get together and say we're going to get this resolved. We just haven't seen that yet.