| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,415 | $22,438 |
| 2016 | $25,900 | $21,658 |
| 2017 | $26,380 | $19,267 |
| 2018 | $26,380 | $22,612 |
| 2019 | $24,258 | $18,403 |
| 2020 | $24,608 | $18,753 |
| 2021* | $24,608 | $18,100 |
| 2022* | $24,608 | $17,471 |
| 2023* | $24,608 | $16,863 |
| 2024* | $24,608 | $16,276 |
| 2025* | $24,608 | $15,709 |