| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $33,410 | $19,198 |
| 2016 | $35,330 | $20,978 |
| 2017 | $36,115 | $21,582 |
| 2018 | $36,115 | $21,191 |
| 2019 | $40,478 | $22,831 |
| 2020 | $40,710 | $23,063 |
| 2021* | $41,614 | $23,727 |
| 2022* | $42,538 | $24,411 |
| 2023* | $43,482 | $25,114 |
| 2024* | $44,447 | $25,837 |
| 2025* | $45,434 | $26,581 |
