| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $43,442 | $17,027 |
| 2016 | $44,272 | $20,718 |
| 2017 | $45,064 | $21,397 |
| 2018 | $45,064 | $22,254 |
| 2019 | $46,380 | $20,706 |
| 2020 | $47,030 | $21,356 |
| 2021* | $47,872 | $22,056 |
| 2022* | $48,729 | $22,780 |
| 2023* | $49,601 | $23,527 |
| 2024* | $50,489 | $24,299 |
| 2025* | $51,393 | $25,096 |