| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $27,590 | $15,820 |
| 2016 | $28,990 | $18,431 |
| 2017 | $30,820 | $17,415 |
| 2018 | $30,820 | $17,877 |
| 2019 | $34,250 | $26,229 |
| 2020 | $35,970 | $27,949 |
| 2021* | $37,794 | $29,782 |
| 2022* | $39,710 | $31,736 |
| 2023* | $41,723 | $33,818 |
| 2024* | $43,838 | $36,037 |
| 2025* | $46,061 | $38,401 |
