| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $41,332 | $23,275 |
| 2016 | $38,106 | $21,792 |
| 2017 | $40,173 | $20,720 |
| 2018 | $40,173 | $27,314 |
| 2019 | $40,720 | $28,334 |
| 2020 | $40,790 | $28,404 |
| 2021* | $40,859 | $28,475 |
| 2022* | $40,929 | $28,546 |
| 2023* | $40,998 | $28,618 |
| 2024* | $41,068 | $28,689 |
| 2025* | $41,138 | $28,761 |