| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $34,764 | $16,083 |
| 2016 | $35,408 | $18,809 |
| 2017 | $36,040 | $18,228 |
| 2018 | $36,040 | $17,990 |
| 2019 | $37,297 | $20,342 |
| 2020 | $39,137 | $22,182 |
| 2021* | $39,861 | $24,189 |
| 2022* | $40,598 | $26,379 |
| 2023* | $41,350 | $28,766 |
| 2024* | $42,115 | $31,369 |
| 2025* | $42,894 | $34,208 |
