| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $32,305 | $19,070 |
| 2016 | $33,220 | $18,911 |
| 2017 | $34,414 | $22,829 |
| 2018 | $34,414 | $21,384 |
| 2019 | $38,461 | $24,594 |
| 2020 | $41,625 | $27,758 |
| 2021* | $43,119 | $31,328 |
| 2022* | $44,667 | $35,356 |
| 2023* | $46,271 | $39,903 |
| 2024* | $47,932 | $45,035 |
| 2025* | $49,653 | $50,826 |