| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $21,110 | $13,311 |
| 2016 | $21,410 | $13,565 |
| 2017 | $21,410 | $13,402 |
| 2018 | $21,410 | $13,473 |
| 2019 | $23,446 | $12,430 |
| 2020 | $23,866 | $12,850 |
| 2021* | $24,205 | $12,918 |
| 2022* | $24,549 | $12,987 |
| 2023* | $24,897 | $13,055 |
| 2024* | $25,251 | $13,125 |
| 2025* | $25,609 | $13,194 |