| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,992 | $21,520 |
| 2016 | $39,744 | $34,928 |
| 2017 | $24,400 | $19,934 |
| 2018 | $24,400 | $19,945 |
| 2019 | $28,336 | $22,717 |
| 2020 | $30,096 | $24,477 |
| 2021* | $31,965 | $26,374 |
| 2022* | $33,950 | $28,418 |
| 2023* | $36,058 | $30,620 |
| 2024* | $38,297 | $32,993 |
| 2025* | $40,676 | $35,550 |