| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $33,640 | $23,255 |
| 2016 | $34,070 | $22,611 |
| 2017 | $35,340 | $23,568 |
| 2018 | $35,340 | $21,794 |
| 2019 | $38,429 | $23,150 |
| 2020 | $39,766 | $24,487 |
| 2021* | $41,150 | $25,523 |
| 2022* | $42,582 | $26,602 |
| 2023* | $44,064 | $27,728 |
| 2024* | $45,597 | $28,901 |
| 2025* | $47,184 | $30,123 |