| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $16,517 | $11,811 |
| 2016 | $16,517 | $11,384 |
| 2017 | $16,560 | $11,475 |
| 2018 | $16,560 | $10,889 |
| 2019 | $18,512 | $12,333 |
| 2020 | $18,232 | $12,053 |
| 2021* | $18,232 | $11,779 |
| 2022* | $18,232 | $11,512 |
| 2023* | $18,232 | $11,251 |
| 2024* | $18,232 | $10,995 |
| 2025* | $18,232 | $10,746 |