| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,718 | $17,793 |
| 2016 | $25,489 | $17,126 |
| 2017 | $26,158 | $17,581 |
| 2018 | $26,158 | $17,960 |
| 2019 | $28,666 | $19,807 |
| 2020 | $28,668 | $19,809 |
| 2021* | $28,671 | $20,237 |
| 2022* | $28,674 | $20,674 |
| 2023* | $28,677 | $21,121 |
| 2024* | $28,679 | $21,577 |
| 2025* | $28,682 | $22,043 |
