| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,020 | N/A |
| 2016 | $28,785 | N/A |
| 2017 | $29,010 | $22,954 |
| 2018 | $29,010 | $23,017 |
| 2019 | $30,875 | $23,291 |
| 2020 | $30,875 | $23,291 |
| 2021* | $31,116 | $23,354 |
| 2022* | $31,359 | $23,417 |
| 2023* | $31,603 | $23,480 |
| 2024* | $31,850 | $23,544 |
| 2025* | $32,098 | $23,607 |