| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $20,200 | $12,893 |
| 2016 | $20,700 | $12,413 |
| 2017 | $21,610 | $13,367 |
| 2018 | $21,610 | $13,401 |
| 2019 | $23,680 | $14,479 |
| 2020 | $23,680 | $14,479 |
| 2021* | $24,267 | $14,515 |
| 2022* | $24,869 | $14,551 |
| 2023* | $25,486 | $14,588 |
| 2024* | $26,118 | $14,624 |
| 2025* | $26,766 | $14,661 |