| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | N/A | N/A |
| 2016 | $23,280 | $19,267 |
| 2017 | $23,392 | $18,822 |
| 2018 | $23,392 | $19,070 |
| 2019 | $25,340 | $18,964 |
| 2020 | $31,650 | $25,274 |
| 2021* | $33,043 | $25,370 |
| 2022* | $34,496 | $25,466 |
| 2023* | $36,014 | $25,563 |
| 2024* | $37,599 | $25,660 |
| 2025* | $39,253 | $25,758 |