| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,540 | $28,312 |
| 2016 | $36,712 | $27,821 |
| 2017 | $34,752 | $25,911 |
| 2018 | $34,752 | $27,270 |
| 2019 | $36,830 | $32,515 |
| 2020 | $37,564 | $33,249 |
| 2021* | $37,741 | $34,000 |
| 2022* | $37,918 | $34,769 |
| 2023* | $38,096 | $35,555 |
| 2024* | $38,275 | $36,358 |
| 2025* | $38,455 | $37,180 |
