| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $16,570 | $12,088 |
| 2016 | $15,610 | $11,256 |
| 2017 | $16,210 | $10,881 |
| 2018 | $16,210 | $12,865 |
| 2019 | $15,850 | $10,368 |
| 2020 | $15,850 | $10,368 |
| 2021* | $15,850 | $10,023 |
| 2022* | $15,850 | $9,689 |
| 2023* | $15,850 | $9,366 |
| 2024* | $15,850 | $9,054 |
| 2025* | $15,850 | $8,753 |