| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $55,230 | $35,398 |
| 2016 | $57,162 | $35,622 |
| 2017 | $59,200 | $37,526 |
| 2018 | $59,200 | $36,018 |
| 2019 | $63,572 | $38,095 |
| 2020 | $65,636 | $40,159 |
| 2021* | $67,933 | $42,308 |
| 2022* | $70,311 | $44,571 |
| 2023* | $72,772 | $46,956 |
| 2024* | $75,319 | $49,468 |
| 2025* | $77,955 | $52,114 |