| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $45,435 | $28,688 |
| 2016 | $47,138 | $29,932 |
| 2017 | $48,180 | $29,063 |
| 2018 | $48,180 | $27,469 |
| 2019 | $50,752 | $26,016 |
| 2020 | $52,142 | $27,406 |
| 2021* | $53,571 | $26,611 |
| 2022* | $55,039 | $25,840 |
| 2023* | $56,547 | $25,090 |
| 2024* | $58,096 | $24,363 |
| 2025* | $59,688 | $23,656 |