| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $32,179 | $20,962 |
| 2016 | $32,025 | $20,615 |
| 2017 | $32,052 | $21,999 |
| 2018 | $32,052 | $21,871 |
| 2019 | $31,476 | $21,543 |
| 2020 | $31,481 | $21,548 |
| 2021* | $31,481 | $21,423 |
| 2022* | $31,481 | $21,299 |
| 2023* | $31,481 | $21,175 |
| 2024* | $31,481 | $21,052 |
| 2025* | $31,481 | $20,930 |