| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $39,349 | $37,963 |
| 2016 | $41,554 | $39,985 |
| 2017 | $42,736 | $32,951 |
| 2018 | $42,736 | $34,388 |
| 2019 | $46,150 | $40,893 |
| 2020 | $47,763 | $42,506 |
| 2021* | $49,435 | $44,359 |
| 2022* | $51,165 | $46,293 |
| 2023* | $52,956 | $48,312 |
| 2024* | $54,809 | $50,418 |
| 2025* | $56,727 | $52,616 |