Versions of Iowa Code 321.148 - Monthly estimate on LawServer 2023 Iowa Code 321.148 – Monthly estimate 2022 Iowa Code 321.148 – Monthly estimate 2020 Iowa Code 321.148 – Monthly estimate 2018 Iowa Code 321.148 – Monthly estimate 2016 Iowa Code 321.148 – Monthly estimate 2014 Iowa Code 321.148 – Monthly estimate. 2009 Iowa Code 321.148 – Monthly estimate