| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $37,940 | $24,925 |
| 2016 | $39,620 | $25,719 |
| 2017 | $41,430 | $27,048 |
| 2018 | $41,430 | $26,098 |
| 2019 | $44,450 | $25,854 |
| 2020 | $45,610 | $27,014 |
| 2021* | $47,631 | $27,876 |
| 2022* | $49,741 | $28,765 |
| 2023* | $51,944 | $29,683 |
| 2024* | $54,245 | $30,629 |
| 2025* | $56,648 | $31,607 |