| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,560 | $28,205 |
| 2016 | $45,758 | $27,570 |
| 2017 | $47,484 | $29,007 |
| 2018 | $47,484 | $27,414 |
| 2019 | $50,276 | $26,724 |
| 2020 | $53,943 | $30,391 |
| 2021* | $55,977 | $29,707 |
| 2022* | $58,087 | $29,039 |
| 2023* | $60,277 | $28,385 |
| 2024* | $62,549 | $27,747 |
| 2025* | $64,907 | $27,122 |
