2023 Washington Code 82.04.070 – “Gross proceeds of sales.”

2022 Washington Code 82.04.070 – “Gross proceeds of sales.”

2020 Washington Code 82.04.070 – “Gross proceeds of sales.”

2019 Washington Code 82.04.070

2018 Washington Code 82.04.070 – “Gross proceeds of sales.”

2016 Washington Code 82.04.070 – “Gross proceeds of sales.”

2015 Washington Code 82.04.070 – “Gross proceeds of sales.”

2014 Washington Code 82.04.070 – “Gross proceeds of sales.”

2013 Washington Code 82.04.070 – “Gross proceeds of sales.”

2009 Washington Code 82.04.070 – Gross proceeds of sales