| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $13,454 | $9,062 |
| 2016 | $14,815 | $10,270 |
| 2017 | $15,122 | $10,458 |
| 2018 | $15,122 | $9,985 |
| 2019 | $15,552 | $10,606 |
| 2020 | $15,552 | $10,606 |
| 2021* | $15,874 | $10,800 |
| 2022* | $16,203 | $10,998 |
| 2023* | $16,538 | $11,199 |
| 2024* | $16,880 | $11,404 |
| 2025* | $17,230 | $11,613 |
