| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $52,776 | $30,718 |
| 2016 | $54,474 | $30,516 |
| 2017 | $56,234 | $31,894 |
| 2018 | $56,234 | $25,722 |
| 2019 | $60,048 | $28,848 |
| 2020 | $62,004 | $30,804 |
| 2021* | $64,007 | $32,196 |
| 2022* | $66,074 | $33,652 |
| 2023* | $68,208 | $35,173 |
| 2024* | $70,411 | $36,762 |
| 2025* | $72,686 | $38,424 |