Clipped Steelhead

Hi, I am an avid fisherman of the Main Clearwater and Southfork of the Clearwater Steelhead. I have noticed that this year there is a drastic drop in the amount of clipped, or keeper Steelhead, available to anglers. In years past we have seen a 50% ratio of clipped Steelhead at minimum, and most years there has been a near 70% clipped ratio. This year we have fished quite a few days and have figured our numbers to be closer to 5 or 6% clipped fish, and many people we have talked to have experienced similar numbers. What is happening with this fishery? If the returns are at par this year, then shouldn't we see a normal number of clipped fish? This uneven ratio is bound to keep a lot of people away from the river if it continues, including myself. I would like an explanation as to why the majority of Steelhead in the 2014-15 run are not clipped by the standard ratio. Thanks, a concerned fisherman.