| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $20,500 | $14,675 |
| 2016 | $20,500 | $14,270 |
| 2017 | $20,500 | $13,866 |
| 2018 | $20,500 | $10,604 |
| 2019 | $21,500 | $13,035 |
| 2020 | $22,000 | $13,535 |
| 2021* | $22,000 | $13,161 |
| 2022* | $22,000 | $12,798 |
| 2023* | $22,000 | $12,445 |
| 2024* | $22,000 | $12,101 |
| 2025* | $22,000 | $11,767 |