| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $40,840 | $21,604 |
| 2016 | $41,380 | $21,990 |
| 2017 | $42,700 | $23,306 |
| 2018 | $42,700 | $22,647 |
| 2019 | $44,530 | $22,886 |
| 2020 | $45,970 | $24,326 |
| 2021* | $47,436 | $24,761 |
| 2022* | $48,950 | $25,205 |
| 2023* | $50,511 | $25,656 |
| 2024* | $52,122 | $26,115 |
| 2025* | $53,785 | $26,583 |
