| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $52,690 | $33,809 |
| 2016 | $55,170 | $33,076 |
| 2017 | $56,746 | $35,198 |
| 2018 | $56,746 | $35,844 |
| 2019 | $61,260 | $38,661 |
| 2020 | $63,170 | $40,571 |
| 2021* | $65,141 | $42,575 |
| 2022* | $67,173 | $44,678 |
| 2023* | $69,269 | $46,886 |
| 2024* | $71,430 | $49,202 |
| 2025* | $73,659 | $51,632 |