| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $31,690 | $14,736 |
| 2016 | $32,650 | $15,488 |
| 2017 | $34,150 | $16,204 |
| 2018 | $34,150 | $17,316 |
| 2019 | $38,440 | $16,156 |
| 2020 | $40,100 | $17,816 |
| 2021* | $41,832 | $18,725 |
| 2022* | $43,639 | $19,680 |
| 2023* | $45,525 | $20,683 |
| 2024* | $47,491 | $21,738 |
| 2025* | $49,543 | $22,847 |