2023 Washington Code 18.108.220 – Federal classification

2022 Washington Code 18.108.220 – Federal classification

2020 Washington Code 18.108.220 – Federal classification

2019 Washington Code 18.108.220 – Federal classification

2018 Washington Code 18.108.220 – Federal classification

2016 Washington Code 18.108.220 – Federal classification

2015 Washington Code 18.108.220 – Federal classification

2014 Washington Code 18.108.220 – Federal classification

2013 Washington Code 18.108.220 – Federal classification

2009 Washington Code 18.108.220 – Federal classification