| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $20,752 | $16,692 |
| 2016 | $15,790 | $11,163 |
| 2017 | $15,760 | $11,343 |
| 2018 | $15,760 | $11,491 |
| 2019 | $16,950 | $12,468 |
| 2020 | $17,210 | $12,728 |
| 2021* | $17,210 | $12,933 |
| 2022* | $17,210 | $13,141 |
| 2023* | $17,210 | $13,353 |
| 2024* | $17,210 | $13,568 |
| 2025* | $17,210 | $13,786 |