| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $31,600 | $24,568 |
| 2016 | $32,440 | $25,072 |
| 2017 | $33,460 | $25,957 |
| 2018 | $33,460 | $24,556 |
| 2019 | $35,675 | $25,083 |
| 2020 | $36,640 | $26,048 |
| 2021* | $37,629 | $26,608 |
| 2022* | $38,645 | $27,180 |
| 2023* | $39,689 | $27,764 |
| 2024* | $40,760 | $28,361 |
| 2025* | $41,861 | $28,971 |