| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,706 | $25,092 |
| 2016 | $46,468 | $24,923 |
| 2017 | $47,896 | $25,018 |
| 2018 | $47,896 | $23,921 |
| 2019 | $49,064 | $22,616 |
| 2020 | $49,556 | $23,108 |
| 2021* | $50,765 | $22,953 |
| 2022* | $52,004 | $22,799 |
| 2023* | $53,273 | $22,647 |
| 2024* | $54,573 | $22,495 |
| 2025* | $55,904 | $22,344 |
