| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $56,211 | $35,308 |
| 2016 | $57,912 | $35,713 |
| 2017 | $59,877 | $34,764 |
| 2018 | $59,877 | $32,595 |
| 2019 | $64,270 | $35,340 |
| 2020 | $64,692 | $35,762 |
| 2021* | $66,652 | $36,173 |
| 2022* | $68,672 | $36,589 |
| 2023* | $70,752 | $37,010 |
| 2024* | $72,896 | $37,436 |
| 2025* | $75,105 | $37,866 |