| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $15,250 | $8,255 |
| 2016 | $15,750 | $9,585 |
| 2017 | $16,250 | $8,055 |
| 2018 | $16,250 | $9,812 |
| 2019 | $16,750 | $7,659 |
| 2020 | $17,000 | $7,909 |
| 2021* | $17,524 | $8,167 |
| 2022* | $18,063 | $8,433 |
| 2023* | $18,620 | $8,708 |
| 2024* | $19,193 | $8,992 |
| 2025* | $19,784 | $9,285 |