Versions of Iowa Code 97B.65 - Revision rights reserved -- limitation on increase of benefits -- rates of contribution on LawServer 2024 Iowa Code 97B.65 – Revision rights reserved — limitation on increase of benefits — rates of contribution 2023 Iowa Code 97B.65 – Revision rights reserved — limitation on increase of benefits — rates of contribution 2022 Iowa Code 97B.65 – Revision rights reserved — limitation on increase of benefits — rates of contribution. 2020 Iowa Code 97B.65 – Revision rights reserved — limitation on increase of benefits — rates of contribution. 2018 Iowa Code 97B.65 – Revision rights reserved — limitation on increase of benefits — rates of contribution. 2016 Iowa Code 97B.65 – Revision rights reserved 2014 Iowa Code 97B.65 – Revision rights reserved – limitation on increase of benefits – rates of contribution. 2009 Iowa Code 97B.65 – Revision rights reserved — limitation on increase of benefits — rates of contribution