| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $39,646 | $24,876 |
| 2016 | $41,096 | $26,388 |
| 2017 | $42,690 | $27,791 |
| 2018 | $42,690 | $27,344 |
| 2019 | $45,662 | $29,163 |
| 2020 | $47,112 | $30,613 |
| 2021* | $48,836 | $32,242 |
| 2022* | $50,624 | $33,957 |
| 2023* | $52,477 | $35,763 |
| 2024* | $54,397 | $37,666 |
| 2025* | $56,388 | $39,670 |