| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,998 | $10,737 |
| 2016 | $21,535 | $12,135 |
| 2017 | $22,198 | $12,717 |
| 2018 | $22,198 | $12,976 |
| 2019 | $24,466 | $13,331 |
| 2020 | $25,048 | $13,913 |
| 2021* | $25,819 | $14,521 |
| 2022* | $26,615 | $15,156 |
| 2023* | $27,434 | $15,818 |
| 2024* | $28,279 | $16,509 |
| 2025* | $29,150 | $17,231 |
