| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,690 | $22,505 |
| 2016 | $40,308 | $22,896 |
| 2017 | $41,420 | $22,483 |
| 2018 | $41,420 | $21,390 |
| 2019 | $43,208 | $21,830 |
| 2020 | $44,172 | $22,794 |
| 2021* | $45,391 | $23,191 |
| 2022* | $46,644 | $23,594 |
| 2023* | $47,931 | $24,005 |
| 2024* | $49,254 | $24,422 |
| 2025* | $50,614 | $24,847 |