| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $24,470 | $20,962 |
| 2016 | $24,880 | $20,881 |
| 2017 | $24,590 | $20,829 |
| 2018 | $24,590 | $20,360 |
| 2019 | $25,980 | $21,153 |
| 2020 | $25,450 | $20,623 |
| 2021* | $25,450 | $20,543 |
| 2022* | $25,450 | $20,462 |
| 2023* | $25,450 | $20,383 |
| 2024* | $25,450 | $20,303 |
| 2025* | $25,450 | $20,224 |
