| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $30,398 | $17,854 |
| 2016 | $30,995 | $17,609 |
| 2017 | $31,577 | $17,645 |
| 2018 | $31,577 | $17,681 |
| 2019 | $33,457 | $18,963 |
| 2020 | $33,002 | $18,508 |
| 2021* | $33,622 | $18,545 |
| 2022* | $34,255 | $18,582 |
| 2023* | $34,899 | $18,619 |
| 2024* | $35,555 | $18,657 |
| 2025* | $36,223 | $18,694 |
