| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,390 | $17,376 |
| 2016 | $37,730 | $20,387 |
| 2017 | $39,120 | $20,622 |
| 2018 | $39,120 | $20,586 |
| 2019 | $42,450 | $19,714 |
| 2020 | $43,245 | $20,509 |
| 2021* | $44,836 | $20,745 |
| 2022* | $46,486 | $20,983 |
| 2023* | $48,197 | $21,225 |
| 2024* | $49,971 | $21,469 |
| 2025* | $51,810 | $21,716 |