| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,120 | $34,671 |
| 2016 | $48,870 | $36,202 |
| 2017 | $50,740 | $38,298 |
| 2018 | $50,740 | $37,252 |
| 2019 | $54,595 | $38,811 |
| 2020 | $56,450 | $40,666 |
| 2021* | $58,544 | $42,463 |
| 2022* | $60,716 | $44,340 |
| 2023* | $62,969 | $46,300 |
| 2024* | $65,305 | $48,347 |
| 2025* | $67,728 | $50,484 |