| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $40,506 | $21,932 |
| 2016 | $41,650 | $22,491 |
| 2017 | $43,186 | $23,066 |
| 2018 | $43,186 | $21,455 |
| 2019 | $45,912 | $24,180 |
| 2020 | $47,188 | $25,456 |
| 2021* | $48,519 | $26,108 |
| 2022* | $49,887 | $26,776 |
| 2023* | $51,294 | $27,461 |
| 2024* | $52,740 | $28,165 |
| 2025* | $54,227 | $28,886 |