| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $33,024 | $28,046 |
| 2016 | $30,974 | $24,837 |
| 2017 | $34,032 | $28,529 |
| 2018 | $34,032 | $29,186 |
| 2019 | $33,114 | $25,179 |
| 2020 | $40,801 | $32,866 |
| 2021* | $40,801 | $33,622 |
| 2022* | $40,801 | $34,395 |
| 2023* | $40,801 | $35,186 |
| 2024* | $40,801 | $35,996 |
| 2025* | $40,801 | $36,823 |