| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,032 | $14,608 |
| 2016 | $18,672 | $14,725 |
| 2017 | $18,528 | $14,791 |
| 2018 | $18,528 | $14,759 |
| 2019 | $18,827 | $14,548 |
| 2020 | $21,184 | $16,905 |
| 2021* | $21,184 | $16,981 |
| 2022* | $21,184 | $17,057 |
| 2023* | $21,184 | $17,134 |
| 2024* | $21,184 | $17,211 |
| 2025* | $21,184 | $17,289 |
