| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $49,338 | $37,166 |
| 2016 | $50,570 | $34,701 |
| 2017 | $51,828 | $35,341 |
| 2018 | $51,828 | $36,728 |
| 2019 | $54,724 | $37,834 |
| 2020 | $56,596 | $39,706 |
| 2021* | $58,011 | $40,901 |
| 2022* | $59,461 | $42,132 |
| 2023* | $60,948 | $43,400 |
| 2024* | $62,471 | $44,707 |
| 2025* | $64,033 | $46,052 |