| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $39,774 | $21,511 |
| 2016 | $40,962 | $20,495 |
| 2017 | $30,970 | $10,709 |
| 2018 | $30,970 | $9,752 |
| 2019 | $32,382 | $16,406 |
| 2020 | $33,220 | $17,244 |
| 2021* | $34,080 | $16,430 |
| 2022* | $34,963 | $15,655 |
| 2023* | $35,869 | $14,916 |
| 2024* | $36,798 | $14,212 |
| 2025* | $37,751 | $13,541 |