| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $42,026 | $29,892 |
| 2016 | $39,129 | $26,798 |
| 2017 | $40,793 | $30,704 |
| 2018 | $40,793 | $30,519 |
| 2019 | $42,570 | $26,162 |
| 2020 | $42,600 | $26,192 |
| 2021* | $42,630 | $26,035 |
| 2022* | $42,660 | $25,879 |
| 2023* | $42,690 | $25,723 |
| 2024* | $42,719 | $25,569 |
| 2025* | $42,749 | $25,416 |
