| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,088 | $18,313 |
| 2016 | $29,420 | $17,689 |
| 2017 | $29,740 | $21,284 |
| 2018 | $29,740 | $20,536 |
| 2019 | $30,060 | $19,756 |
| 2020 | $30,060 | $19,756 |
| 2021* | $30,385 | $19,082 |
| 2022* | $30,713 | $18,432 |
| 2023* | $31,045 | $17,803 |
| 2024* | $31,380 | $17,196 |
| 2025* | $31,719 | $16,610 |
