| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $63,250 | $26,442 |
| 2016 | $65,478 | $26,139 |
| 2017 | $67,430 | $25,756 |
| 2018 | $67,430 | $24,182 |
| 2019 | $73,160 | $23,385 |
| 2020 | $72,462 | $22,687 |
| 2021* | $74,621 | $22,011 |
| 2022* | $76,845 | $21,355 |
| 2023* | $79,135 | $20,719 |
| 2024* | $81,493 | $20,101 |
| 2025* | $83,922 | $19,502 |