| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,387 | $19,152 |
| 2016 | $25,177 | $17,615 |
| 2017 | $25,281 | $18,219 |
| 2018 | $25,281 | $18,377 |
| 2019 | $27,049 | $20,114 |
| 2020 | $26,859 | $19,924 |
| 2021* | $26,859 | $20,097 |
| 2022* | $26,859 | $20,272 |
| 2023* | $26,859 | $20,449 |
| 2024* | $26,859 | $20,626 |
| 2025* | $26,859 | $20,806 |