| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $34,288 | $24,205 |
| 2016 | $36,083 | $28,440 |
| 2017 | $36,088 | $27,048 |
| 2018 | $36,088 | $26,450 |
| 2019 | $36,388 | $22,880 |
| 2020 | $37,676 | $24,168 |
| 2021* | $37,989 | $23,634 |
| 2022* | $38,304 | $23,112 |
| 2023* | $38,622 | $22,601 |
| 2024* | $38,943 | $22,101 |
| 2025* | $39,266 | $21,613 |