| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,688 | $17,644 |
| 2016 | $24,138 | $17,773 |
| 2017 | $24,138 | $17,453 |
| 2018 | $24,138 | $17,592 |
| 2019 | $25,291 | $18,505 |
| 2020 | $26,019 | $19,233 |
| 2021* | $26,513 | $19,387 |
| 2022* | $27,017 | $19,542 |
| 2023* | $27,530 | $19,698 |
| 2024* | $28,054 | $19,856 |
| 2025* | $28,587 | $20,015 |
