| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,846 | $14,257 |
| 2016 | $24,205 | $15,084 |
| 2017 | $24,660 | $15,901 |
| 2018 | $24,660 | $15,700 |
| 2019 | $26,386 | $16,212 |
| 2020 | $26,386 | $16,212 |
| 2021* | $26,784 | $16,741 |
| 2022* | $27,189 | $17,286 |
| 2023* | $27,599 | $17,850 |
| 2024* | $28,016 | $18,432 |
| 2025* | $28,439 | $19,033 |
