| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $30,460 | $25,826 |
| 2016 | $31,209 | $26,243 |
| 2017 | $31,957 | $27,207 |
| 2018 | $31,957 | $28,308 |
| 2019 | $33,402 | $28,186 |
| 2020 | $33,905 | $28,689 |
| 2021* | $34,719 | $29,200 |
| 2022* | $35,552 | $29,719 |
| 2023* | $36,405 | $30,248 |
| 2024* | $37,279 | $30,787 |
| 2025* | $38,174 | $31,335 |
