| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $46,460 | $28,456 |
| 2016 | $47,987 | $29,506 |
| 2017 | $49,324 | $29,725 |
| 2018 | $49,324 | $28,066 |
| 2019 | $52,670 | $30,467 |
| 2020 | $54,388 | $32,185 |
| 2021* | $56,161 | $33,373 |
| 2022* | $57,992 | $34,604 |
| 2023* | $59,882 | $35,881 |
| 2024* | $61,835 | $37,205 |
| 2025* | $63,850 | $38,578 |