| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,649 | $19,534 |
| 2016 | $27,144 | $19,761 |
| 2017 | $27,672 | $21,781 |
| 2018 | $27,672 | $20,383 |
| 2019 | $28,830 | $20,531 |
| 2020 | $28,830 | $20,531 |
| 2021* | $29,366 | $20,681 |
| 2022* | $29,912 | $20,832 |
| 2023* | $30,469 | $20,984 |
| 2024* | $31,036 | $21,137 |
| 2025* | $31,613 | $21,291 |