| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $16,427 | $11,653 |
| 2016 | $14,561 | $9,311 |
| 2017 | $14,453 | $9,381 |
| 2018 | $14,453 | $9,650 |
| 2019 | $14,368 | $8,470 |
| 2020 | $14,368 | $8,470 |
| 2021* | $14,283 | $8,470 |
| 2022* | $14,199 | $8,470 |
| 2023* | $14,115 | $8,470 |
| 2024* | $14,032 | $8,470 |
| 2025* | $13,949 | $8,470 |