| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,068 | $23,599 |
| 2016 | $26,340 | N/A |
| 2017 | $26,820 | $23,216 |
| 2018 | $26,820 | $19,215 |
| 2019 | $27,180 | $16,585 |
| 2020 | $29,610 | $19,015 |
| 2021* | $30,007 | $16,412 |
| 2022* | $30,409 | $14,165 |
| 2023* | $30,816 | $12,226 |
| 2024* | $31,229 | $10,552 |
| 2025* | $31,648 | $9,108 |
