| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $21,163 | $10,118 |
| 2016 | $20,489 | $10,955 |
| 2017 | $22,127 | $12,309 |
| 2018 | $22,127 | $12,345 |
| 2019 | $23,645 | $13,183 |
| 2020 | $23,317 | $12,855 |
| 2021* | $23,317 | $13,728 |
| 2022* | $23,317 | $14,660 |
| 2023* | $23,317 | $15,655 |
| 2024* | $23,317 | $16,718 |
| 2025* | $23,317 | $17,854 |