| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $63,698 | $39,812 |
| 2016 | $65,212 | $38,324 |
| 2017 | $67,114 | $37,681 |
| 2018 | $67,114 | $36,482 |
| 2019 | $68,088 | $36,560 |
| 2020 | $67,688 | $36,160 |
| 2021* | $68,669 | $35,553 |
| 2022* | $69,665 | $34,955 |
| 2023* | $70,675 | $34,368 |
| 2024* | $71,700 | $33,791 |
| 2025* | $72,740 | $33,223 |