| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,328 | $31,962 |
| 2016 | $36,914 | $31,873 |
| 2017 | $38,152 | $33,083 |
| 2018 | $38,152 | $30,090 |
| 2019 | $39,428 | $30,474 |
| 2020 | $40,421 | $31,467 |
| 2021* | $41,440 | $31,870 |
| 2022* | $42,484 | $32,278 |
| 2023* | $43,554 | $32,691 |
| 2024* | $44,652 | $33,109 |
| 2025* | $45,777 | $33,533 |
