| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,810 | $23,700 |
| 2016 | $38,150 | $24,334 |
| 2017 | $39,726 | $25,192 |
| 2018 | $39,726 | $24,754 |
| 2019 | $41,778 | $28,043 |
| 2020 | $43,266 | $29,531 |
| 2021* | $44,841 | $30,573 |
| 2022* | $46,473 | $31,653 |
| 2023* | $48,165 | $32,770 |
| 2024* | $49,918 | $33,927 |
| 2025* | $51,735 | $35,124 |