The goal is 100% of Puget Sound hatchery be clipped regardless of species. It has to do with the ESA. ALL Puget Sound hatchery Coho, Steelhead, and Chinook are required to be clipped. That is happening with few exceptions, with a small percentage having CWT. The the few exceptions to the clipping has to do with a hatchery not wanting to clip any of their salmon. They still might be fighting the 100% policy, but to my knowlege they are now complying? That is why in just recent years you have seen an increase in clipped Chinook off VI. It doesn't take much to realize why the ones objected. In Pugest Sound, if a salmon is not clipped it is deemed "wild" and cannot be retained by the sport sector. If a hatchery ran by a tribe doesn't clip a particular "very" large hatchery program there are more unclipped hatchery returning to be havested.
Less than 40% of the Columbia River Chinook is clipped. Which means you have somewhre around 80,000,000 (yes million) Chinook released every year from the Columbia River hatcheries. Very small percentage have CWT. In relation to number CWT very small percentage.
It really depends on the time of year and where the fish is harvested. The only way to really tell where a salmon is from is by that CWT or DNA. Off the WCVI during the summer months now well over 80% of the Chinook harvested is from the U.S. mostly from the Columbia. Those "feeders" are mostly Puget Sound as that is their feeding grounds. The Puget Sound Chinook also feed during the winter months in the Strait of Juan de Fuca, so if you catch a Chinook off Victoria or Sooke in the winter and it is clipped it is probably from Pugest Sound - CWT or not. Where as if you catch a Chinook off the mouth of the Fraser in early spring - it will likely have come from the Fraser, with only a small percentage having CWT's. Just think Nicola 4-2 there, approximately 150 - 200,000 Nicola Chinook are clipped each year.
They actually publish the number released every year, with the number that are both clipped and have CWT. I can dig up that website if wanted?