| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,590 | $14,331 |
| 2016 | $18,980 | $11,143 |
| 2017 | $19,296 | $10,913 |
| 2018 | $19,296 | $9,669 |
| 2019 | $19,296 | $9,138 |
| 2020 | $20,176 | $10,018 |
| 2021* | $20,511 | $9,468 |
| 2022* | $20,851 | $8,948 |
| 2023* | $21,198 | $8,457 |
| 2024* | $21,549 | $7,993 |
| 2025* | $21,907 | $7,554 |