| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $21,250 | $13,812 |
| 2016 | $21,850 | $13,543 |
| 2017 | $22,650 | $12,351 |
| 2018 | $22,650 | $11,376 |
| 2019 | $23,950 | $12,353 |
| 2020 | $24,250 | $12,653 |
| 2021* | $24,934 | $12,406 |
| 2022* | $25,637 | $12,164 |
| 2023* | $26,360 | $11,927 |
| 2024* | $27,103 | $11,695 |
| 2025* | $27,868 | $11,467 |