| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $66,648 | $27,159 |
| 2016 | $69,152 | $25,982 |
| 2017 | $71,374 | $25,870 |
| 2018 | $71,374 | $25,569 |
| 2019 | $76,130 | $25,065 |
| 2020 | $78,628 | $27,563 |
| 2021* | $81,207 | $27,243 |
| 2022* | $83,871 | $26,927 |
| 2023* | $86,622 | $26,615 |
| 2024* | $89,463 | $26,306 |
| 2025* | $92,397 | $26,001 |