| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,493 | $8,691 |
| 2016 | $19,745 | $10,177 |
| 2017 | $20,431 | $10,425 |
| 2018 | $20,431 | $10,164 |
| 2019 | $21,716 | $11,293 |
| 2020 | $22,232 | $11,809 |
| 2021* | $22,761 | $12,349 |
| 2022* | $23,303 | $12,913 |
| 2023* | $23,857 | $13,503 |
| 2024* | $24,425 | $14,120 |
| 2025* | $25,007 | $14,766 |
