| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,355 | $18,124 |
| 2016 | $30,000 | $18,959 |
| 2017 | $31,000 | $19,254 |
| 2018 | $31,000 | $18,765 |
| 2019 | $32,500 | $19,108 |
| 2020 | $32,675 | $19,283 |
| 2021* | $33,394 | $19,584 |
| 2022* | $34,129 | $19,889 |
| 2023* | $34,879 | $20,200 |
| 2024* | $35,647 | $20,515 |
| 2025* | $36,431 | $20,835 |