| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $37,530 | $23,305 |
| 2016 | $38,750 | $23,379 |
| 2017 | $39,710 | $23,864 |
| 2018 | $39,710 | $23,909 |
| 2019 | $42,140 | $24,354 |
| 2020 | $43,790 | $26,004 |
| 2021* | $45,213 | $26,488 |
| 2022* | $46,683 | $26,980 |
| 2023* | $48,200 | $27,482 |
| 2024* | $49,766 | $27,993 |
| 2025* | $51,384 | $28,514 |