| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $43,212 | $26,541 |
| 2016 | $44,649 | $26,752 |
| 2017 | $45,402 | $26,741 |
| 2018 | $45,402 | $27,836 |
| 2019 | $47,883 | $26,541 |
| 2020 | $47,011 | $25,669 |
| 2021* | $47,805 | $25,659 |
| 2022* | $48,613 | $25,648 |
| 2023* | $49,435 | $25,638 |
| 2024* | $50,270 | $25,628 |
| 2025* | $51,120 | $25,618 |