Versions of Iowa Code 74A.6 - Rates established on LawServer 2023 Iowa Code 74A.6 – Rates established 2022 Iowa Code 74A.6 – Rates established 2020 Iowa Code 74A.6 – Rates established 2018 Iowa Code 74A.6 – Rates established 2016 Iowa Code 74A.6 – Rates established 2014 Iowa Code 74A.6 – Rates established. 2009 Iowa Code 74A.6 – Rates established