| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $37,700 | $31,413 |
| 2016 | $38,644 | $31,264 |
| 2017 | $39,978 | $26,430 |
| 2018 | $39,978 | $25,454 |
| 2019 | $45,338 | $27,334 |
| 2020 | $46,721 | $28,717 |
| 2021* | $48,146 | $28,582 |
| 2022* | $49,614 | $28,448 |
| 2023* | $51,128 | $28,314 |
| 2024* | $52,687 | $28,181 |
| 2025* | $54,294 | $28,048 |