2024 49 USC 49106 – Metropolitan Washington Airports Authority

2023 49 USC 49106 – Metropolitan Washington Airports Authority

2022 49 USC 49106 – Metropolitan Washington Airports Authority

2021 49 USC 49106 – Metropolitan Washington Airports Authority

2020 49 USC 49106 – Metropolitan Washington Airports Authority

2018 49 USC 49106 – Metropolitan Washington Airports Authority

2017 49 USC 49106 – Metropolitan Washington Airports Authority

2015 49 USC 49106 – Metropolitan Washington Airports Authority

2014 49 USC 49106 – Metropolitan Washington Airports Authority

2013 49 USC 49106 – Metropolitan Washington Airports Authority

2012 49 USC 49106 – Metropolitan Washington Airports Authority

2010 49 USC 49106 – Metropolitan Washington Airports Authority