| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,500 | $29,770 |
| 2016 | $46,140 | $31,298 |
| 2017 | $47,460 | $29,747 |
| 2018 | $47,460 | $28,888 |
| 2019 | $51,030 | $29,989 |
| 2020 | $52,530 | $31,489 |
| 2021* | $54,074 | $32,689 |
| 2022* | $55,664 | $33,934 |
| 2023* | $57,301 | $35,227 |
| 2024* | $58,985 | $36,569 |
| 2025* | $60,720 | $37,963 |