| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $45,066 | $29,840 |
| 2016 | $46,392 | $27,667 |
| 2017 | $47,766 | $30,418 |
| 2018 | $47,766 | $29,268 |
| 2019 | $41,416 | $31,400 |
| 2020 | $43,930 | $33,914 |
| 2021* | $45,222 | $36,383 |
| 2022* | $46,551 | $39,032 |
| 2023* | $47,920 | $41,873 |
| 2024* | $49,328 | $44,921 |
| 2025* | $50,779 | $48,192 |