| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,234 | $12,185 |
| 2016 | $17,750 | $11,772 |
| 2017 | $17,144 | $11,465 |
| 2018 | $17,144 | $11,391 |
| 2019 | $18,583 | $12,578 |
| 2020 | $18,795 | $12,790 |
| 2021* | $18,795 | $12,707 |
| 2022* | $18,795 | $12,624 |
| 2023* | $18,795 | $12,542 |
| 2024* | $18,795 | $12,461 |
| 2025* | $18,795 | $12,380 |