| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $20,752 | $17,116 |
| 2016 | $15,790 | $11,788 |
| 2017 | $15,760 | $11,990 |
| 2018 | $15,760 | $11,508 |
| 2019 | $16,950 | $12,237 |
| 2020 | $17,210 | $12,497 |
| 2021* | $17,210 | $12,711 |
| 2022* | $17,210 | $12,928 |
| 2023* | $17,210 | $13,149 |
| 2024* | $17,210 | $13,374 |
| 2025* | $17,210 | $13,603 |