| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $21,453 | $16,066 |
| 2016 | $22,009 | $15,733 |
| 2017 | $22,581 | $17,056 |
| 2018 | $22,581 | $16,705 |
| 2019 | $23,673 | $17,121 |
| 2020 | $23,673 | $17,121 |
| 2021* | $24,286 | $17,121 |
| 2022* | $24,915 | $17,121 |
| 2023* | $25,560 | $17,121 |
| 2024* | $26,222 | $17,121 |
| 2025* | $26,902 | $17,121 |