| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,841 | $18,758 |
| 2016 | $30,963 | $18,603 |
| 2017 | $32,385 | $19,411 |
| 2018 | $32,385 | $18,736 |
| 2019 | $35,312 | $19,471 |
| 2020 | $36,272 | $20,431 |
| 2021* | $37,636 | $21,232 |
| 2022* | $39,051 | $22,064 |
| 2023* | $40,519 | $22,929 |
| 2024* | $42,043 | $23,828 |
| 2025* | $43,624 | $24,762 |