| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $41,335 | $23,868 |
| 2016 | $42,822 | $24,395 |
| 2017 | $44,334 | $24,678 |
| 2018 | $44,334 | $24,366 |
| 2019 | $46,660 | $24,333 |
| 2020 | $48,180 | $25,853 |
| 2021* | $49,881 | $26,153 |
| 2022* | $51,642 | $26,456 |
| 2023* | $53,464 | $26,763 |
| 2024* | $55,352 | $27,074 |
| 2025* | $57,306 | $27,388 |