| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $41,260 | $22,587 |
| 2016 | $42,265 | $22,389 |
| 2017 | $43,364 | $23,192 |
| 2018 | $43,364 | $23,102 |
| 2019 | $44,450 | $22,901 |
| 2020 | $46,120 | $24,571 |
| 2021* | $47,273 | $24,475 |
| 2022* | $48,455 | $24,380 |
| 2023* | $49,666 | $24,285 |
| 2024* | $50,908 | $24,190 |
| 2025* | $52,181 | $24,096 |