| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $16,534 | $11,634 |
| 2016 | $17,361 | $12,773 |
| 2017 | $18,057 | $13,627 |
| 2018 | $18,057 | $12,228 |
| 2019 | $20,612 | $12,806 |
| 2020 | $20,868 | $13,062 |
| 2021* | $21,705 | $13,680 |
| 2022* | $22,575 | $14,327 |
| 2023* | $23,480 | $15,005 |
| 2024* | $24,422 | $15,714 |
| 2025* | $25,401 | $16,458 |
