| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,363 | $22,665 |
| 2016 | $25,990 | $18,407 |
| 2017 | $26,840 | $20,513 |
| 2018 | $26,840 | $19,884 |
| 2019 | $27,750 | $18,368 |
| 2020 | $27,750 | $18,368 |
| 2021* | $27,750 | $17,804 |
| 2022* | $27,750 | $17,258 |
| 2023* | $27,750 | $16,728 |
| 2024* | $27,750 | $16,214 |
| 2025* | $27,750 | $15,716 |