| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,995 | $31,391 |
| 2016 | $50,365 | $30,807 |
| 2017 | $52,775 | $32,487 |
| 2018 | $52,775 | $31,235 |
| 2019 | $54,845 | $32,003 |
| 2020 | $56,390 | $33,548 |
| 2021* | $57,980 | $34,373 |
| 2022* | $59,615 | $35,219 |
| 2023* | $61,296 | $36,085 |
| 2024* | $63,025 | $36,973 |
| 2025* | $64,802 | $37,882 |