2024 8 USC 1771 – General Accounting Office study

2023 8 USC 1771 – General Accounting Office study

2022 8 USC 1771 – General Accounting Office study

2021 8 USC 1771 – General Accounting Office study

2020 8 USC 1771 – General Accounting Office study

2018 8 USC 1771 – General Accounting Office study

2017 8 USC 1771 – General Accounting Office study

2015 8 USC 1771 – General Accounting Office study

2014 8 USC 1771 – General Accounting Office study

2013 8 USC 1771 – General Accounting Office study

2012 8 USC 1771 – General Accounting Office study

2010 8 USC 1771 – General Accounting Office study