| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $41,967 | $28,030 |
| 2016 | $43,517 | $29,291 |
| 2017 | $45,330 | $28,841 |
| 2018 | $45,330 | $27,604 |
| 2019 | $48,755 | $28,267 |
| 2020 | $50,599 | $30,111 |
| 2021* | $52,512 | $30,834 |
| 2022* | $54,497 | $31,574 |
| 2023* | $56,557 | $32,331 |
| 2024* | $58,694 | $33,107 |
| 2025* | $60,913 | $33,902 |