| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $33,810 | $28,196 |
| 2016 | $31,754 | $20,440 |
| 2017 | $32,009 | $19,445 |
| 2018 | $32,009 | $23,288 |
| 2019 | $30,927 | $21,626 |
| 2020 | $31,348 | $22,047 |
| 2021* | $31,348 | $20,973 |
| 2022* | $31,348 | $19,952 |
| 2023* | $31,348 | $18,980 |
| 2024* | $31,348 | $18,056 |
| 2025* | $31,348 | $17,177 |