| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $24,984 | $15,768 |
| 2016 | $25,524 | $15,444 |
| 2017 | $26,691 | $16,114 |
| 2018 | $26,691 | $15,841 |
| 2019 | $25,374 | $12,326 |
| 2020 | $25,619 | $12,571 |
| 2021* | $25,868 | $12,359 |
| 2022* | $26,118 | $12,150 |
| 2023* | $26,372 | $11,944 |
| 2024* | $26,628 | $11,743 |
| 2025* | $26,886 | $11,544 |
