| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $13,868 | $8,583 |
| 2016 | $17,804 | $12,392 |
| 2017 | $17,936 | $12,536 |
| 2018 | $17,936 | $12,582 |
| 2019 | $20,550 | $14,824 |
| 2020 | $20,550 | $14,824 |
| 2021* | $20,702 | $14,996 |
| 2022* | $20,855 | $15,170 |
| 2023* | $21,010 | $15,346 |
| 2024* | $21,165 | $15,524 |
| 2025* | $21,322 | $15,704 |
