| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,976 | $19,346 |
| 2016 | $30,334 | $19,742 |
| 2017 | $30,804 | $21,597 |
| 2018 | $30,804 | $21,617 |
| 2019 | $32,722 | $21,687 |
| 2020 | $32,997 | $21,962 |
| 2021* | $33,390 | $22,241 |
| 2022* | $33,787 | $22,523 |
| 2023* | $34,189 | $22,809 |
| 2024* | $34,596 | $23,099 |
| 2025* | $35,008 | $23,392 |
