| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,270 | $26,262 |
| 2016 | $46,090 | $26,387 |
| 2017 | $47,610 | $26,705 |
| 2018 | $47,610 | $24,927 |
| 2019 | $50,810 | $26,309 |
| 2020 | $52,510 | $28,009 |
| 2021* | $54,269 | $28,348 |
| 2022* | $56,087 | $28,691 |
| 2023* | $57,966 | $29,038 |
| 2024* | $59,908 | $29,389 |
| 2025* | $61,915 | $29,745 |