| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,397 | $30,992 |
| 2016 | $49,840 | $30,094 |
| 2017 | $51,790 | $30,087 |
| 2018 | $51,790 | $27,715 |
| 2019 | $43,655 | $22,578 |
| 2020 | $44,320 | $23,243 |
| 2021* | $44,994 | $22,569 |
| 2022* | $45,678 | $21,914 |
| 2023* | $46,372 | $21,279 |
| 2024* | $47,077 | $20,662 |
| 2025* | $47,792 | $20,063 |
