| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,335 | $18,899 |
| 2016 | $22,335 | $19,586 |
| 2017 | $20,816 | $19,198 |
| 2018 | $20,816 | $19,166 |
| 2019 | $20,830 | $17,212 |
| 2020 | $23,530 | $19,912 |
| 2021* | $23,530 | $19,878 |
| 2022* | $23,530 | $19,844 |
| 2023* | $23,530 | $19,811 |
| 2024* | $23,530 | $19,777 |
| 2025* | $23,530 | $19,743 |
