2024 5 CFR 2421.5 – Primary national subdivision

2023 5 CFR 2421.5 – Primary national subdivision

2022 5 CFR 2421.5 – Primary national subdivision

2021 5 CFR 2421.5 – Primary national subdivision

2020 5 CFR 2421.5 – Primary national subdivision

2019 5 CFR 2421.5 – Primary national subdivision

2016 5 CFR 2421.5 – Primary national subdivision

2015 5 CFR 2421.5 – Primary national subdivision

2014 5 CFR 2421.5 – Primary national subdivision

2010 5 CFR 2421.5 – Primary national subdivision

2009 5 CFR 2421.5 – Primary national subdivision