| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,292 | $12,982 |
| 2016 | $19,441 | $12,250 |
| 2017 | $19,655 | $12,660 |
| 2018 | $19,655 | $12,385 |
| 2019 | $20,277 | $12,653 |
| 2020 | $20,245 | $12,621 |
| 2021* | $20,401 | $12,589 |
| 2022* | $20,558 | $12,558 |
| 2023* | $20,716 | $12,527 |
| 2024* | $20,876 | $12,495 |
| 2025* | $21,037 | $12,464 |
