| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,032 | $15,196 |
| 2016 | $18,672 | $15,051 |
| 2017 | $18,528 | $14,781 |
| 2018 | $18,528 | $14,744 |
| 2019 | $18,827 | $14,346 |
| 2020 | $21,184 | $16,703 |
| 2021* | $21,184 | $16,544 |
| 2022* | $21,184 | $16,387 |
| 2023* | $21,184 | $16,231 |
| 2024* | $21,184 | $16,077 |
| 2025* | $21,184 | $15,925 |