| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $27,788 | $20,871 |
| 2016 | $27,966 | $21,090 |
| 2017 | $28,156 | $20,900 |
| 2018 | $28,156 | $21,111 |
| 2019 | $27,458 | $20,651 |
| 2020 | $27,413 | $20,606 |
| 2021* | $27,413 | $20,561 |
| 2022* | $27,413 | $20,515 |
| 2023* | $27,413 | $20,470 |
| 2024* | $27,413 | $20,425 |
| 2025* | $27,413 | $20,380 |