| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $43,806 | $25,833 |
| 2016 | $45,016 | $26,582 |
| 2017 | $46,506 | $26,466 |
| 2018 | $46,506 | $23,243 |
| 2019 | $45,756 | $20,861 |
| 2020 | $46,026 | $21,131 |
| 2021* | $46,298 | $21,038 |
| 2022* | $46,571 | $20,945 |
| 2023* | $46,845 | $20,853 |
| 2024* | $47,122 | $20,762 |
| 2025* | $47,400 | $20,670 |