| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,900 | $31,187 |
| 2016 | $48,480 | $30,568 |
| 2017 | $49,592 | $31,521 |
| 2018 | $49,592 | $29,872 |
| 2019 | $51,450 | $32,211 |
| 2020 | $52,878 | $33,639 |
| 2021* | $54,089 | $34,689 |
| 2022* | $55,328 | $35,771 |
| 2023* | $56,595 | $36,887 |
| 2024* | $57,891 | $38,038 |
| 2025* | $59,216 | $39,225 |