| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,032 | $15,483 |
| 2016 | $18,672 | $15,160 |
| 2017 | $18,528 | $14,940 |
| 2018 | $18,528 | $15,541 |
| 2019 | $18,827 | $15,247 |
| 2020 | $21,184 | $17,604 |
| 2021* | $21,184 | $17,349 |
| 2022* | $21,184 | $17,097 |
| 2023* | $21,184 | $16,849 |
| 2024* | $21,184 | $16,605 |
| 2025* | $21,184 | $16,364 |