| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $16,030 | $9,332 |
| 2016 | $16,833 | $10,423 |
| 2017 | $17,291 | $10,165 |
| 2018 | $17,291 | $10,365 |
| 2019 | $18,537 | $11,521 |
| 2020 | $18,541 | $11,525 |
| 2021* | $19,045 | $11,752 |
| 2022* | $19,563 | $11,984 |
| 2023* | $20,095 | $12,220 |
| 2024* | $20,642 | $12,460 |
| 2025* | $21,204 | $12,706 |
