| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,140 | $33,086 |
| 2016 | $48,406 | $33,341 |
| 2017 | $49,844 | $33,128 |
| 2018 | $49,844 | $33,157 |
| 2019 | $53,290 | $35,442 |
| 2020 | $53,214 | $35,366 |
| 2021* | $54,645 | $35,398 |
| 2022* | $56,115 | $35,430 |
| 2023* | $57,625 | $35,462 |
| 2024* | $59,175 | $35,493 |
| 2025* | $60,767 | $35,525 |