| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,949 | $13,900 |
| 2016 | $20,044 | $13,174 |
| 2017 | $21,108 | $14,179 |
| 2018 | $21,108 | $13,538 |
| 2019 | $20,704 | $12,081 |
| 2020 | $20,704 | $12,081 |
| 2021* | $20,704 | $11,535 |
| 2022* | $20,704 | $11,014 |
| 2023* | $20,704 | $10,516 |
| 2024* | $20,704 | $10,040 |
| 2025* | $20,704 | $9,587 |