2023 North Dakota Code 1-02-30 – Vested rights protected

2022 North Dakota Code 1-02-30 – Vested rights protected

2021 North Dakota Code 1-02-30 – Vested rights protected

2019 North Dakota Code 1-02-30 – Vested rights protected

2016 North Dakota Code 1-02-30 – Vested rights protected

2014 North Dakota Code 1-02-30 – Vested rights protected

2009 North Dakota Code 1-02-30 – Vested rights protected