| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,932 | $14,857 |
| 2016 | $22,932 | $14,794 |
| 2017 | $22,414 | $13,507 |
| 2018 | $22,414 | $12,938 |
| 2019 | $21,831 | $12,973 |
| 2020 | $22,429 | $13,571 |
| 2021* | $22,429 | $13,514 |
| 2022* | $22,429 | $13,457 |
| 2023* | $22,429 | $13,401 |
| 2024* | $22,429 | $13,344 |
| 2025* | $22,429 | $13,288 |