| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,507 | $20,253 |
| 2016 | $23,064 | $18,197 |
| 2017 | $23,335 | $17,583 |
| 2018 | $23,335 | $19,474 |
| 2019 | $18,992 | $12,397 |
| 2020 | $19,282 | $12,687 |
| 2021* | $19,282 | $12,259 |
| 2022* | $19,282 | $11,846 |
| 2023* | $19,282 | $11,447 |
| 2024* | $19,282 | $11,061 |
| 2025* | $19,282 | $10,689 |