| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,717 | $25,413 |
| 2016 | $46,004 | $25,335 |
| 2017 | $47,338 | $26,124 |
| 2018 | $47,338 | $23,872 |
| 2019 | $50,751 | $25,219 |
| 2020 | $52,785 | $27,253 |
| 2021* | $54,316 | $28,101 |
| 2022* | $55,891 | $28,974 |
| 2023* | $57,512 | $29,876 |
| 2024* | $59,180 | $30,805 |
| 2025* | $60,896 | $31,763 |