| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,460 | $26,133 |
| 2016 | $40,377 | $26,237 |
| 2017 | $40,805 | $26,246 |
| 2018 | $40,805 | $23,653 |
| 2019 | $42,874 | $24,531 |
| 2020 | $44,294 | $25,951 |
| 2021* | $45,760 | $26,055 |
| 2022* | $47,275 | $26,159 |
| 2023* | $48,840 | $26,264 |
| 2024* | $50,456 | $26,369 |
| 2025* | $52,126 | $26,474 |