Versions of South Dakota Codified Laws 4-8-21. Reversion of unencumbered special appropriations after four years--Period of availability of encumbered amounts on LawServer 2023 South Dakota Codified Laws 4-8-21. Reversion of unencumbered special appropriations after four years–Period of availability of encumbered amounts 2022 South Dakota Codified Laws 4-8-21. Reversion of unencumbered special appropriations after four years–Period ofavailability of encumbered amounts 2021 South Dakota Codified Laws 4-8-21. Reversion of unencumbered special appropriations after four years–Period ofavailability of encumbered amounts 2019 South Dakota Codified Laws 4-8-21. Reversion of unencumbered special appropriations after four years–Period ofavailability of encumbered amounts 2018 South Dakota Codified Laws 4-8-21. Reversion of unencumbered special appropriations after four years–Period of availability of encumbered amounts 2016 South Dakota Codified Laws 4-8-21. Reversion of unencumbered special appropriations after four years–Period ofavailability of encumbered amounts 2014 South Dakota Codified Laws 4-8-21. Reversion of unencumbered special appropriations after four years–Period ofavailability of encumbered amounts 2010 South Dakota Laws 4-8-21 – Reversion of unencumbered special appropriations after four years–Period of availability of encumbered amounts