| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,922 | $24,742 |
| 2016 | $30,640 | $26,480 |
| 2017 | $30,454 | $25,822 |
| 2018 | $30,454 | $26,214 |
| 2019 | $31,674 | $26,343 |
| 2020 | $33,170 | $27,839 |
| 2021* | $33,966 | $28,262 |
| 2022* | $34,781 | $28,692 |
| 2023* | $35,616 | $29,128 |
| 2024* | $36,471 | $29,571 |
| 2025* | $37,346 | $30,020 |
