| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $55,670 | $34,843 |
| 2016 | $57,530 | $33,158 |
| 2017 | $59,560 | $35,729 |
| 2018 | $59,560 | $36,695 |
| 2019 | $63,540 | $38,589 |
| 2020 | $65,762 | $40,811 |
| 2021* | $68,064 | $42,917 |
| 2022* | $70,446 | $45,131 |
| 2023* | $72,912 | $47,460 |
| 2024* | $75,463 | $49,909 |
| 2025* | $78,105 | $52,484 |