2024 26 USC 616 – Development expenditures

2023 26 USC 616 – Development expenditures

2022 26 USC 616 – Development expenditures

2021 26 USC 616 – Development expenditures

2020 26 USC 616 – Development expenditures

2018 26 USC 616 – Development expenditures

2017 26 USC 616 – Development expenditures

2015 26 USC 616 – Development expenditures

2014 26 USC 616 – Development expenditures

2013 26 USC 616 – Development expenditures

2012 26 USC 616 – Development expenditures

2010 26 USC 616 – Development expenditures