| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,072 | $25,672 |
| 2016 | $29,923 | $26,757 |
| 2017 | $30,741 | $27,184 |
| 2018 | $30,741 | $28,427 |
| 2019 | $31,581 | $27,498 |
| 2020 | $31,581 | $27,498 |
| 2021* | $32,443 | $27,938 |
| 2022* | $33,329 | $28,385 |
| 2023* | $34,239 | $28,839 |
| 2024* | $35,173 | $29,301 |
| 2025* | $36,134 | $29,769 |
