| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,319 | $14,281 |
| 2016 | $17,676 | $13,622 |
| 2017 | $17,804 | $13,861 |
| 2018 | $17,804 | $13,968 |
| 2019 | $19,115 | $14,629 |
| 2020 | $19,115 | $14,629 |
| 2021* | $19,115 | $14,742 |
| 2022* | $19,115 | $14,855 |
| 2023* | $19,115 | $14,970 |
| 2024* | $19,115 | $15,085 |
| 2025* | $19,115 | $15,201 |