| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $67,751 | $37,370 |
| 2016 | $69,754 | $37,128 |
| 2017 | $71,975 | $33,048 |
| 2018 | $71,975 | $29,998 |
| 2019 | $76,910 | $29,657 |
| 2020 | $79,093 | $31,840 |
| 2021* | $81,434 | $31,477 |
| 2022* | $83,845 | $31,118 |
| 2023* | $86,326 | $30,763 |
| 2024* | $88,882 | $30,413 |
| 2025* | $91,513 | $30,066 |