Wash. Rev. Code § 36.28A.405
Subject to the availability of amounts appropriated for this specific purpose, the Washington association of sheriffs and police chiefs shall prepare an annual report on the number of denied firearms sales or transfers reported pursuant to chapter 261, Laws of 2017. The report shall indicate the number of cases in which a person was denied a firearms sale or transfer, the number of cases where the denied sale or transfer was investigated for potential criminal prosecution, and the number of cases where an arrest was made, the case was referred for prosecution, and a conviction was obtained. The Washington state patrol shall submit the report to the appropriate committees of the legislature on or before December 31st of each year.
RCW 36.28A.405