| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $45,432 | $28,891 |
| 2016 | $46,646 | $29,025 |
| 2017 | $47,490 | $31,661 |
| 2018 | $47,490 | $29,970 |
| 2019 | $49,699 | $28,278 |
| 2020 | $51,768 | $30,347 |
| 2021* | $53,150 | $30,487 |
| 2022* | $54,569 | $30,627 |
| 2023* | $56,026 | $30,768 |
| 2024* | $57,522 | $30,909 |
| 2025* | $59,058 | $31,051 |