| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,070 | $40,267 |
| 2016 | $49,675 | $41,780 |
| 2017 | $50,345 | $42,160 |
| 2018 | $50,345 | $42,411 |
| 2019 | $52,250 | $41,985 |
| 2020 | $36,356 | $26,091 |
| 2021* | $36,847 | $26,248 |
| 2022* | $37,344 | $26,405 |
| 2023* | $37,848 | $26,563 |
| 2024* | $38,359 | $26,723 |
| 2025* | $38,877 | $26,883 |