| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $51,726 | $36,191 |
| 2016 | $53,485 | $37,202 |
| 2017 | $55,243 | $37,308 |
| 2018 | $55,243 | $34,526 |
| 2019 | $60,494 | $37,018 |
| 2020 | $62,688 | $39,212 |
| 2021* | $64,819 | $40,306 |
| 2022* | $67,023 | $41,431 |
| 2023* | $69,302 | $42,586 |
| 2024* | $71,658 | $43,775 |
| 2025* | $74,095 | $44,996 |