| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,510 | $19,865 |
| 2016 | $25,591 | $21,536 |
| 2017 | $25,456 | $20,414 |
| 2018 | $25,456 | $20,703 |
| 2019 | $26,146 | $21,491 |
| 2020 | $26,146 | $21,491 |
| 2021* | $26,146 | $21,796 |
| 2022* | $26,146 | $22,106 |
| 2023* | $26,146 | $22,420 |
| 2024* | $26,146 | $22,738 |
| 2025* | $26,146 | $23,061 |