| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,316 | $13,975 |
| 2016 | $18,316 | $13,735 |
| 2017 | $18,646 | $14,459 |
| 2018 | $18,646 | $14,501 |
| 2019 | $19,399 | $15,244 |
| 2020 | $17,840 | $13,685 |
| 2021* | $17,840 | $13,725 |
| 2022* | $17,840 | $13,764 |
| 2023* | $17,840 | $13,804 |
| 2024* | $17,840 | $13,844 |
| 2025* | $17,840 | $13,885 |