| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | N/A | N/A |
| 2016 | $18,403 | N/A |
| 2017 | $25,408 | N/A |
| 2018 | $25,408 | $22,048 |
| 2019 | $25,288 | $16,626 |
| 2020 | $25,837 | $17,175 |
| 2021* | $26,119 | $15,348 |
| 2022* | $26,403 | $13,715 |
| 2023* | $26,691 | $12,255 |
| 2024* | $26,982 | $10,951 |
| 2025* | $27,276 | $9,786 |