2024 16 USC 409b – George Washington headquarters; maintenance

2023 16 USC 409b – George Washington headquarters; maintenance

2022 16 USC 409b – George Washington headquarters; maintenance

2021 16 USC 409b – George Washington headquarters; maintenance

2020 16 USC 409b – George Washington headquarters; maintenance

2018 16 USC 409b – George Washington headquarters; maintenance

2017 16 USC 409b – George Washington headquarters; maintenance

2015 16 USC 409b – George Washington headquarters; maintenance

2014 16 USC 409b – George Washington headquarters; maintenance

2013 16 USC 409b – George Washington headquarters; maintenance

2012 16 USC 409b – George Washington headquarters; maintenance

2010 16 USC 409b – George Washington headquarters; maintenance