| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $51,260 | $26,385 |
| 2016 | $53,490 | $25,803 |
| 2017 | $55,240 | $26,123 |
| 2018 | $55,240 | $23,697 |
| 2019 | $59,070 | $23,265 |
| 2020 | $61,054 | $25,249 |
| 2021* | $63,105 | $24,789 |
| 2022* | $65,226 | $24,338 |
| 2023* | $67,417 | $23,895 |
| 2024* | $69,683 | $23,460 |
| 2025* | $72,024 | $23,033 |