| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,075 | $14,197 |
| 2016 | $22,850 | $13,481 |
| 2017 | $23,866 | $15,103 |
| 2018 | $23,866 | $14,784 |
| 2019 | $24,242 | $13,655 |
| 2020 | $24,212 | $13,625 |
| 2021* | $24,212 | $13,338 |
| 2022* | $24,212 | $13,056 |
| 2023* | $24,212 | $12,781 |
| 2024* | $24,212 | $12,511 |
| 2025* | $24,212 | $12,247 |