| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $57,400 | $36,375 |
| 2016 | $59,410 | $37,035 |
| 2017 | $60,930 | $38,516 |
| 2018 | $60,930 | $34,219 |
| 2019 | $64,240 | $34,317 |
| 2020 | $66,220 | $36,297 |
| 2021* | $68,260 | $36,954 |
| 2022* | $70,362 | $37,623 |
| 2023* | $72,529 | $38,304 |
| 2024* | $74,763 | $38,997 |
| 2025* | $77,066 | $39,703 |