| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $57,714 | $33,194 |
| 2016 | $59,754 | $34,170 |
| 2017 | $61,538 | $34,080 |
| 2018 | $61,538 | $31,304 |
| 2019 | $64,573 | $32,504 |
| 2020 | $66,470 | $34,401 |
| 2021* | $68,457 | $35,412 |
| 2022* | $70,504 | $36,454 |
| 2023* | $72,612 | $37,525 |
| 2024* | $74,784 | $38,628 |
| 2025* | $77,020 | $39,764 |