| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $27,577 | $22,101 |
| 2016 | $26,849 | $21,635 |
| 2017 | $26,853 | $21,327 |
| 2018 | $26,853 | $21,679 |
| 2019 | $26,678 | $20,651 |
| 2020 | $26,679 | $20,652 |
| 2021* | $26,679 | $20,359 |
| 2022* | $26,679 | $20,070 |
| 2023* | $26,679 | $19,785 |
| 2024* | $26,679 | $19,504 |
| 2025* | $26,679 | $19,227 |
