| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,825 | $20,656 |
| 2016 | $22,914 | $17,912 |
| 2017 | $23,069 | $18,400 |
| 2018 | $23,069 | $18,414 |
| 2019 | $18,992 | $13,383 |
| 2020 | $19,282 | $13,673 |
| 2021* | $19,282 | $13,684 |
| 2022* | $19,282 | $13,695 |
| 2023* | $19,282 | $13,706 |
| 2024* | $19,282 | $13,717 |
| 2025* | $19,282 | $13,728 |