| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $13,825 | $4,366 |
| 2016 | $14,025 | $3,041 |
| 2017 | $14,125 | $3,026 |
| 2018 | $14,125 | $3,539 |
| 2019 | $14,425 | $3,476 |
| 2020 | $14,775 | $3,826 |
| 2021* | $14,989 | $3,807 |
| 2022* | $15,207 | $3,789 |
| 2023* | $15,427 | $3,770 |
| 2024* | $15,651 | $3,752 |
| 2025* | $15,878 | $3,733 |