| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,400 | $20,610 |
| 2016 | $38,100 | $21,014 |
| 2017 | $39,840 | $22,672 |
| 2018 | $39,840 | $21,132 |
| 2019 | $43,510 | $25,254 |
| 2020 | $45,100 | $26,844 |
| 2021* | $47,161 | $28,535 |
| 2022* | $49,316 | $30,333 |
| 2023* | $51,570 | $32,244 |
| 2024* | $53,927 | $34,275 |
| 2025* | $56,391 | $36,435 |