| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $35,060 | $28,897 |
| 2016 | $35,096 | $29,768 |
| 2017 | $33,156 | $27,410 |
| 2018 | $33,156 | $27,026 |
| 2019 | $34,632 | $29,659 |
| 2020 | $35,164 | $30,191 |
| 2021* | $35,199 | $30,731 |
| 2022* | $35,234 | $31,282 |
| 2023* | $35,270 | $31,841 |
| 2024* | $35,305 | $32,411 |
| 2025* | $35,340 | $32,992 |