| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,936 | $20,917 |
| 2016 | $38,556 | $22,080 |
| 2017 | $39,970 | $21,778 |
| 2018 | $39,970 | $20,930 |
| 2019 | $42,470 | $22,227 |
| 2020 | $43,508 | $23,265 |
| 2021* | $45,105 | $24,351 |
| 2022* | $46,760 | $25,489 |
| 2023* | $48,476 | $26,679 |
| 2024* | $50,255 | $27,925 |
| 2025* | $52,100 | $29,229 |
