| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $24,255 | $21,119 |
| 2016 | $25,716 | $22,060 |
| 2017 | $25,716 | $23,297 |
| 2018 | $25,716 | $20,065 |
| 2019 | $24,850 | $18,707 |
| 2020 | $25,450 | $19,307 |
| 2021* | $25,450 | $19,927 |
| 2022* | $25,450 | $20,566 |
| 2023* | $25,450 | $21,227 |
| 2024* | $25,450 | $21,908 |
| 2025* | $25,450 | $22,611 |