| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $63,252 | $48,567 |
| 2016 | $64,618 | $48,232 |
| 2017 | $66,030 | $48,637 |
| 2018 | $66,030 | $49,264 |
| 2019 | $68,954 | $51,786 |
| 2020 | $70,508 | $53,340 |
| 2021* | $72,052 | $54,028 |
| 2022* | $73,630 | $54,725 |
| 2023* | $75,243 | $55,431 |
| 2024* | $76,890 | $56,146 |
| 2025* | $78,574 | $56,870 |