| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $60,579 | $41,617 |
| 2016 | $63,030 | $42,881 |
| 2017 | $65,299 | $43,304 |
| 2018 | $65,299 | $43,056 |
| 2019 | $70,172 | $45,597 |
| 2020 | $68,144 | $43,569 |
| 2021* | $70,597 | $44,000 |
| 2022* | $73,139 | $44,436 |
| 2023* | $75,772 | $44,876 |
| 2024* | $78,499 | $45,320 |
| 2025* | $81,325 | $45,769 |