| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $46,838 | $30,179 |
| 2016 | $48,074 | $30,471 |
| 2017 | $49,234 | $31,542 |
| 2018 | $49,234 | $31,108 |
| 2019 | $52,146 | $32,963 |
| 2020 | $53,470 | $34,287 |
| 2021* | $54,828 | $35,490 |
| 2022* | $56,221 | $36,736 |
| 2023* | $57,649 | $38,026 |
| 2024* | $59,113 | $39,360 |
| 2025* | $60,615 | $40,742 |