| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,329 | $16,342 |
| 2016 | $23,329 | $14,621 |
| 2017 | $25,329 | $19,437 |
| 2018 | $25,329 | $15,027 |
| 2019 | $25,329 | $21,810 |
| 2020 | $24,929 | $21,410 |
| 2021* | $24,929 | $21,018 |
| 2022* | $24,929 | $20,634 |
| 2023* | $24,929 | $20,256 |
| 2024* | $24,929 | $19,885 |
| 2025* | $24,929 | $19,521 |