| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,633 | $13,236 |
| 2016 | $23,700 | $12,968 |
| 2017 | $23,700 | $11,922 |
| 2018 | $23,700 | $12,076 |
| 2019 | $23,035 | $10,760 |
| 2020 | $23,120 | $10,845 |
| 2021* | $23,120 | $10,626 |
| 2022* | $23,120 | $10,411 |
| 2023* | $23,120 | $10,201 |
| 2024* | $23,120 | $9,995 |
| 2025* | $23,120 | $9,793 |