| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $63,058 | $31,353 |
| 2016 | $65,080 | $29,664 |
| 2017 | $66,950 | $28,696 |
| 2018 | $66,950 | $28,737 |
| 2019 | $72,604 | $29,044 |
| 2020 | $72,884 | $29,324 |
| 2021* | $74,976 | $29,365 |
| 2022* | $77,128 | $29,406 |
| 2023* | $79,341 | $29,447 |
| 2024* | $81,618 | $29,489 |
| 2025* | $83,961 | $29,530 |