| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,408 | $20,290 |
| 2016 | $40,666 | $23,397 |
| 2017 | $41,569 | $20,332 |
| 2018 | $41,569 | $18,825 |
| 2019 | $44,650 | $19,891 |
| 2020 | $45,729 | $20,970 |
| 2021* | $46,836 | $22,107 |
| 2022* | $47,969 | $23,305 |
| 2023* | $49,130 | $24,568 |
| 2024* | $50,319 | $25,899 |
| 2025* | $51,537 | $27,303 |
