| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $40,658 | $25,910 |
| 2016 | $41,528 | $25,877 |
| 2017 | $42,902 | $25,534 |
| 2018 | $42,902 | $23,768 |
| 2019 | $46,020 | $24,082 |
| 2020 | $47,752 | $25,814 |
| 2021* | $49,333 | $25,780 |
| 2022* | $50,966 | $25,747 |
| 2023* | $52,652 | $25,713 |
| 2024* | $54,395 | $25,680 |
| 2025* | $56,196 | $25,647 |
