2024 43 USC 751a – Survey system extended to Alaska

2023 43 USC 751a – Survey system extended to Alaska

2022 43 USC 751a – Survey system extended to Alaska

2021 43 USC 751a – Survey system extended to Alaska

2020 43 USC 751a – Survey system extended to Alaska

2018 43 USC 751a – Survey system extended to Alaska

2017 43 USC 751a – Survey system extended to Alaska

2015 43 USC 751a – Survey system extended to Alaska

2014 43 USC 751a – Survey system extended to Alaska

2013 43 USC 751a – Survey system extended to Alaska

2012 43 USC 751a – Survey system extended to Alaska

2010 43 USC 751a – Survey system extended to Alaska