| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $42,131 | $20,647 |
| 2016 | $42,665 | $20,487 |
| 2017 | $43,550 | $20,138 |
| 2018 | $43,550 | $19,381 |
| 2019 | $43,870 | $18,472 |
| 2020 | $43,870 | $18,472 |
| 2021* | $44,190 | $18,158 |
| 2022* | $44,513 | $17,849 |
| 2023* | $44,838 | $17,546 |
| 2024* | $45,165 | $17,248 |
| 2025* | $45,495 | $16,954 |
