| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $24,349 | $8,883 |
| 2016 | $24,898 | $7,973 |
| 2017 | $25,569 | $7,811 |
| 2018 | $25,569 | $8,278 |
| 2019 | $24,228 | $7,834 |
| 2020 | $24,546 | $8,152 |
| 2021* | $24,868 | $7,987 |
| 2022* | $25,193 | $7,824 |
| 2023* | $25,523 | $7,666 |
| 2024* | $25,858 | $7,510 |
| 2025* | $26,196 | $7,357 |
