| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $32,418 | $23,652 |
| 2016 | $32,934 | $24,467 |
| 2017 | $34,176 | $23,403 |
| 2018 | $34,176 | $22,431 |
| 2019 | $35,690 | $21,581 |
| 2020 | $41,306 | $27,197 |
| 2021* | $42,863 | $26,166 |
| 2022* | $44,479 | $25,175 |
| 2023* | $46,156 | $24,220 |
| 2024* | $47,896 | $23,302 |
| 2025* | $49,702 | $22,419 |
