| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,940 | $14,752 |
| 2016 | $26,050 | $17,734 |
| 2017 | $27,200 | $17,990 |
| 2018 | $27,200 | $17,668 |
| 2019 | $28,150 | $16,051 |
| 2020 | $26,550 | $14,451 |
| 2021* | $27,477 | $14,192 |
| 2022* | $28,436 | $13,938 |
| 2023* | $29,428 | $13,689 |
| 2024* | $30,455 | $13,444 |
| 2025* | $31,518 | $13,203 |
