Actual data on Oregon Coastal wild coho are provided at this web site.
http://oregonstate.edu/Dept/ODFW/spawn/coho.htm

It shows Oregon Coast coho spawners were about 250,000 the last couple years and about 98 % wild. It also shows they have increased greatly in recent years.

These fish could come off the endangered species list soon -because there are abundant wild fish, not because of hatchery fish.