| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $32,199 | $27,025 |
| 2016 | $33,781 | $29,699 |
| 2017 | $28,503 | $24,552 |
| 2018 | $28,503 | $25,287 |
| 2019 | $31,292 | $26,410 |
| 2020 | $31,954 | $27,072 |
| 2021* | $32,631 | $27,881 |
| 2022* | $33,323 | $28,715 |
| 2023* | $34,030 | $29,574 |
| 2024* | $34,751 | $30,458 |
| 2025* | $35,488 | $31,369 |
