| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $24,792 | $18,941 |
| 2016 | $25,439 | $19,487 |
| 2017 | $27,947 | $22,003 |
| 2018 | $27,947 | $21,953 |
| 2019 | $28,346 | $22,907 |
| 2020 | $29,207 | $23,768 |
| 2021* | $29,969 | $24,662 |
| 2022* | $30,752 | $25,589 |
| 2023* | $31,554 | $26,551 |
| 2024* | $32,378 | $27,549 |
| 2025* | $33,223 | $28,585 |
