| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $54,686 | $32,330 |
| 2016 | $56,720 | $35,571 |
| 2017 | $58,830 | $35,440 |
| 2018 | $58,830 | $32,409 |
| 2019 | $63,300 | $31,473 |
| 2020 | $65,676 | $33,849 |
| 2021* | $68,119 | $33,724 |
| 2022* | $70,653 | $33,599 |
| 2023* | $73,281 | $33,475 |
| 2024* | $76,008 | $33,351 |
| 2025* | $78,835 | $33,227 |