| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,101 | $21,554 |
| 2016 | $37,645 | $23,481 |
| 2017 | $41,185 | $25,547 |
| 2018 | $41,185 | $24,591 |
| 2019 | $42,552 | $24,285 |
| 2020 | $44,158 | $25,891 |
| 2021* | $45,823 | $27,602 |
| 2022* | $47,550 | $29,427 |
| 2023* | $49,343 | $31,372 |
| 2024* | $51,203 | $33,446 |
| 2025* | $53,134 | $35,656 |