| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,196 | $16,804 |
| 2016 | $25,547 | $17,704 |
| 2017 | $26,057 | $17,602 |
| 2018 | $26,057 | $18,100 |
| 2019 | $28,542 | $19,672 |
| 2020 | $28,183 | $19,313 |
| 2021* | $28,183 | $19,860 |
| 2022* | $28,183 | $20,422 |
| 2023* | $28,183 | $21,000 |
| 2024* | $28,183 | $21,594 |
| 2025* | $28,183 | $22,205 |