| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $20,030 | $17,446 |
| 2016 | $20,270 | $17,278 |
| 2017 | $20,540 | $17,783 |
| 2018 | $20,540 | $18,091 |
| 2019 | $21,080 | $16,605 |
| 2020 | $21,080 | $16,605 |
| 2021* | $21,333 | $16,605 |
| 2022* | $21,589 | $16,605 |
| 2023* | $21,848 | $16,605 |
| 2024* | $22,110 | $16,605 |
| 2025* | $22,376 | $16,605 |