| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,700 | $23,891 |
| 2016 | $46,150 | $24,352 |
| 2017 | $47,400 | $24,077 |
| 2018 | $47,400 | $22,727 |
| 2019 | $49,660 | $21,292 |
| 2020 | $49,890 | $21,522 |
| 2021* | $51,242 | $21,279 |
| 2022* | $52,631 | $21,038 |
| 2023* | $54,057 | $20,801 |
| 2024* | $55,522 | $20,566 |
| 2025* | $57,027 | $20,333 |
