2024 15 USC 1201 – Study and investigation; research, development and training

2023 15 USC 1201 – Study and investigation; research, development and training

2022 15 USC 1201 – Study and investigation; research, development and training

2021 15 USC 1201 – Study and investigation; research, development and training

2020 15 USC 1201 – Study and investigation; research, development and training

2018 15 USC 1201 – Study and investigation; research, development and training

2017 15 USC 1201 – Study and investigation; research, development and training

2015 15 USC 1201 – Study and investigation; research, development and training

2014 15 USC 1201 – Study and investigation; research, development and training

2013 15 USC 1201 – Study and investigation; research, development and training

2012 15 USC 1201 – Study and investigation; research, development and training

2010 15 USC 1201 – Study and investigation; research, development and training