| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $32,788 | $26,489 |
| 2016 | $36,712 | $31,990 |
| 2017 | $34,948 | $31,341 |
| 2018 | $34,948 | $27,041 |
| 2019 | $36,482 | $29,187 |
| 2020 | $37,368 | $30,073 |
| 2021* | $38,276 | $30,987 |
| 2022* | $39,206 | $31,929 |
| 2023* | $40,159 | $32,900 |
| 2024* | $41,135 | $33,900 |
| 2025* | $42,134 | $34,931 |