| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $14,400 | $8,438 |
| 2016 | $15,000 | $8,374 |
| 2017 | $15,000 | $10,874 |
| 2018 | $15,000 | $9,783 |
| 2019 | $16,000 | $10,207 |
| 2020 | $16,620 | $10,827 |
| 2021* | $17,265 | $11,296 |
| 2022* | $17,935 | $11,785 |
| 2023* | $18,631 | $12,295 |
| 2024* | $19,353 | $12,828 |
| 2025* | $20,104 | $13,383 |