| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $35,200 | $18,955 |
| 2016 | $38,200 | $21,153 |
| 2017 | $38,400 | $19,702 |
| 2018 | $38,400 | $20,052 |
| 2019 | $24,265 | $4,759 |
| 2020 | $24,884 | $5,378 |
| 2021* | $25,013 | $5,474 |
| 2022* | $25,143 | $5,571 |
| 2023* | $25,274 | $5,670 |
| 2024* | $25,406 | $5,771 |
| 2025* | $25,538 | $5,874 |