| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $40,250 | $17,257 |
| 2016 | $41,010 | $16,293 |
| 2017 | $42,350 | $16,599 |
| 2018 | $42,350 | $15,738 |
| 2019 | $44,150 | $15,964 |
| 2020 | $44,990 | $16,804 |
| 2021* | $45,845 | $17,046 |
| 2022* | $46,716 | $17,291 |
| 2023* | $47,603 | $17,540 |
| 2024* | $48,508 | $17,793 |
| 2025* | $49,430 | $18,049 |