| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $37,320 | $24,121 |
| 2016 | $38,540 | $25,907 |
| 2017 | $38,860 | $24,571 |
| 2018 | $38,860 | $23,019 |
| 2019 | $42,338 | $26,015 |
| 2020 | $43,782 | $27,459 |
| 2021* | $45,214 | $28,983 |
| 2022* | $46,692 | $30,592 |
| 2023* | $48,219 | $32,289 |
| 2024* | $49,796 | $34,081 |
| 2025* | $51,424 | $35,973 |