The amount of used vehicle trade internationally among Canada-U.S.-Mexico and overseas is so small you can't calculate it by two or three percentage points. It's thousands of units. It just doesn't happen on used.
Where the Japan used vehicle trade comes in is that it goes into all those ASEAN countries. It is the direct result of their scrappage program. There are no vehicles on the roads in Japan over eight years old. Most Canadians would love to have an eight-year-old Camry. So that vehicle is still valid. They inspect it off the road in Japan, which keeps the demand going and the environment clean, and they export it to Australia, New Zealand, and the ASEAN countries. That's where it comes from.