| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,780 | $30,239 |
| 2016 | $45,412 | $30,683 |
| 2017 | $46,200 | $30,503 |
| 2018 | $46,200 | $30,618 |
| 2019 | $47,850 | $30,672 |
| 2020 | $48,740 | $31,562 |
| 2021* | $49,588 | $31,682 |
| 2022* | $50,451 | $31,802 |
| 2023* | $51,329 | $31,923 |
| 2024* | $52,222 | $32,044 |
| 2025* | $53,131 | $32,166 |