| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,214 | $19,363 |
| 2016 | $28,286 | $19,036 |
| 2017 | $24,414 | $13,652 |
| 2018 | $24,414 | $15,067 |
| 2019 | $24,414 | $16,269 |
| 2020 | $25,652 | $17,507 |
| 2021* | $25,652 | $18,839 |
| 2022* | $25,652 | $20,273 |
| 2023* | $25,652 | $21,816 |
| 2024* | $25,652 | $23,476 |
| 2025* | $25,652 | $25,262 |