| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,560 | $20,182 |
| 2016 | $22,880 | $15,360 |
| 2017 | $22,600 | $16,358 |
| 2018 | $22,600 | $14,369 |
| 2019 | $22,050 | $15,955 |
| 2020 | $22,050 | $15,955 |
| 2021* | $21,781 | $15,955 |
| 2022* | $21,515 | $15,955 |
| 2023* | $21,253 | $15,955 |
| 2024* | $20,993 | $15,955 |
| 2025* | $20,737 | $15,955 |