| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $34,640 | $20,057 |
| 2016 | $36,638 | $20,463 |
| 2017 | $38,052 | $17,368 |
| 2018 | $38,052 | $18,285 |
| 2019 | $38,744 | $20,243 |
| 2020 | $41,300 | $22,799 |
| 2021* | $42,894 | $24,003 |
| 2022* | $44,550 | $25,270 |
| 2023* | $46,270 | $26,604 |
| 2024* | $48,056 | $28,009 |
| 2025* | $49,910 | $29,488 |