Versions of Iowa Code 203C.28 - Tariff rates on LawServer 2024 Iowa Code 203C.28 – Tariff rates 2023 Iowa Code 203C.28 – Tariff rates 2022 Iowa Code 203C.28 – Tariff rates 2020 Iowa Code 203C.28 – Tariff rates 2018 Iowa Code 203C.28 – Tariff rates 2016 Iowa Code 203C.28 – Tariff rates 2014 Iowa Code 203C.28 – Tariff rates. 2009 Iowa Code 203C.28 – Tariff rates