| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $24,194 | $18,751 |
| 2016 | $21,935 | $16,683 |
| 2017 | $22,509 | $17,165 |
| 2018 | $22,509 | $17,328 |
| 2019 | $18,992 | $13,295 |
| 2020 | $19,282 | $13,585 |
| 2021* | $19,282 | $13,714 |
| 2022* | $19,282 | $13,844 |
| 2023* | $19,282 | $13,976 |
| 2024* | $19,282 | $14,109 |
| 2025* | $19,282 | $14,243 |