| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,240 | $13,285 |
| 2016 | $25,240 | $14,733 |
| 2017 | $25,390 | $16,010 |
| 2018 | $25,390 | $16,177 |
| 2019 | $26,105 | $13,600 |
| 2020 | $26,164 | $13,659 |
| 2021* | $26,224 | $13,801 |
| 2022* | $26,284 | $13,945 |
| 2023* | $26,345 | $14,090 |
| 2024* | $26,406 | $14,236 |
| 2025* | $26,466 | $14,384 |