| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $20,650 | $17,299 |
| 2016 | $20,650 | $17,072 |
| 2017 | $24,400 | $20,377 |
| 2018 | $24,400 | $20,214 |
| 2019 | $26,806 | $21,094 |
| 2020 | $27,960 | $22,248 |
| 2021* | $29,165 | $23,216 |
| 2022* | $30,422 | $24,226 |
| 2023* | $31,733 | $25,279 |
| 2024* | $33,101 | $26,379 |
| 2025* | $34,528 | $27,527 |
