2022 33 USC 1904 – Certificates

2010 33 USC 1904 – Certificates

2013 33 USC 1904 – Certificates

2012 33 USC 1904 – Certificates

2014 33 USC 1904 – Certificates

2015 33 USC 1904 – Certificates

2017 33 USC 1904 – Certificates

2018 33 USC 1904 – Certificates

2020 33 USC 1904 – Certificates

2021 33 USC 1904 – Certificates