2023 Washington Code 48.18.170 – “Premium” defined

2022 Washington Code 48.18.170 – “Premium” defined

2020 Washington Code 48.18.170 – “Premium” defined

2019 Washington Code 48.18.170

2018 Washington Code 48.18.170 – “Premium” defined

2016 Washington Code 48.18.170 – “Premium” defined

2015 Washington Code 48.18.170 – “Premium” defined

2014 Washington Code 48.18.170 – “Premium” defined

2013 Washington Code 48.18.170 – “Premium” defined

2009 Washington Code 48.18.170 – Premium defined