| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $37,561 | $25,506 |
| 2016 | $38,341 | $26,175 |
| 2017 | $39,451 | $26,405 |
| 2018 | $39,451 | $22,704 |
| 2019 | $42,109 | $21,660 |
| 2020 | $43,509 | $23,060 |
| 2021* | $44,771 | $23,263 |
| 2022* | $46,069 | $23,468 |
| 2023* | $47,405 | $23,674 |
| 2024* | $48,780 | $23,882 |
| 2025* | $50,194 | $24,093 |