| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,135 | $21,146 |
| 2016 | $26,855 | $22,849 |
| 2017 | $26,222 | $15,859 |
| 2018 | $26,222 | $18,483 |
| 2019 | $25,796 | $18,182 |
| 2020 | $27,462 | $19,848 |
| 2021* | $27,462 | $21,446 |
| 2022* | $27,462 | $23,172 |
| 2023* | $27,462 | $25,038 |
| 2024* | $27,462 | $27,053 |
| 2025* | $27,462 | $29,231 |