| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $45,197 | $28,182 |
| 2016 | $45,943 | $26,621 |
| 2017 | $46,390 | $26,491 |
| 2018 | $46,390 | $26,280 |
| 2019 | $47,764 | $26,876 |
| 2020 | $48,792 | $27,904 |
| 2021* | $49,597 | $27,767 |
| 2022* | $50,415 | $27,631 |
| 2023* | $51,247 | $27,496 |
| 2024* | $52,093 | $27,361 |
| 2025* | $52,952 | $27,227 |