| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,984 | $22,660 |
| 2016 | $38,326 | $21,649 |
| 2017 | $39,890 | $23,581 |
| 2018 | $39,890 | $24,257 |
| 2019 | $41,899 | $24,974 |
| 2020 | $42,242 | $25,317 |
| 2021* | $43,775 | $26,044 |
| 2022* | $45,364 | $26,791 |
| 2023* | $47,011 | $27,560 |
| 2024* | $48,718 | $28,351 |
| 2025* | $50,486 | $29,165 |