| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $31,435 | $25,620 |
| 2016 | $32,293 | $26,284 |
| 2017 | $32,933 | $29,036 |
| 2018 | $32,933 | $25,419 |
| 2019 | $25,459 | $10,257 |
| 2020 | $30,313 | $15,111 |
| 2021* | $30,913 | $15,502 |
| 2022* | $31,525 | $15,904 |
| 2023* | $32,149 | $16,316 |
| 2024* | $32,786 | $16,738 |
| 2025* | $33,435 | $17,172 |