| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $34,894 | $20,034 |
| 2016 | $36,652 | $24,916 |
| 2017 | $37,748 | $26,277 |
| 2018 | $37,748 | $23,522 |
| 2019 | $41,700 | $25,071 |
| 2020 | $44,368 | $27,739 |
| 2021* | $46,604 | $29,567 |
| 2022* | $48,953 | $31,515 |
| 2023* | $51,420 | $33,592 |
| 2024* | $54,012 | $35,806 |
| 2025* | $56,734 | $38,166 |