This gives an idea of the fluctuation and steady descent into the tank for pheasant hunting in Calif. Note that the numbers for 2014 may include club birds in the wild bird count so...
https://www.wildlife.ca.gov/Hunting/Upland-Game-Birds#22503332-harvest-data
https://www.wildlife.ca.gov/Hunting/Upland-Game-Birds#22503332-harvest-data