| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,540 | $29,712 |
| 2016 | $36,712 | $30,755 |
| 2017 | $34,612 | $28,640 |
| 2018 | $34,612 | $28,596 |
| 2019 | $36,536 | $30,234 |
| 2020 | $37,198 | $30,896 |
| 2021* | $37,373 | $31,573 |
| 2022* | $37,548 | $32,264 |
| 2023* | $37,725 | $32,971 |
| 2024* | $37,902 | $33,693 |
| 2025* | $38,080 | $34,431 |
