| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,700 | $8,174 |
| 2016 | $19,200 | $8,478 |
| 2017 | $19,200 | $9,305 |
| 2018 | $19,200 | $9,929 |
| 2019 | $19,250 | $11,648 |
| 2020 | $19,250 | $11,648 |
| 2021* | $19,250 | $12,430 |
| 2022* | $19,250 | $13,264 |
| 2023* | $19,250 | $14,154 |
| 2024* | $19,250 | $15,103 |
| 2025* | $19,250 | $16,117 |