| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $30,720 | $20,534 |
| 2016 | $30,830 | $19,993 |
| 2017 | $31,980 | $20,393 |
| 2018 | $31,980 | $19,179 |
| 2019 | $34,074 | $19,909 |
| 2020 | $35,198 | $21,033 |
| 2021* | $36,360 | $21,454 |
| 2022* | $37,559 | $21,883 |
| 2023* | $38,799 | $22,320 |
| 2024* | $40,079 | $22,767 |
| 2025* | $41,402 | $23,222 |
