| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,352 | $14,035 |
| 2016 | $29,610 | $14,349 |
| 2017 | $30,600 | $16,577 |
| 2018 | $30,600 | $16,166 |
| 2019 | $32,034 | $15,227 |
| 2020 | $32,420 | $15,613 |
| 2021* | $33,503 | $15,963 |
| 2022* | $34,622 | $16,320 |
| 2023* | $35,778 | $16,686 |
| 2024* | $36,973 | $17,060 |
| 2025* | $38,208 | $17,442 |