| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,923 | $23,900 |
| 2016 | $30,855 | $24,725 |
| 2017 | $32,656 | $26,281 |
| 2018 | $32,656 | $26,241 |
| 2019 | $35,259 | $33,030 |
| 2020 | $33,584 | $31,355 |
| 2021* | $34,628 | $32,437 |
| 2022* | $35,705 | $33,556 |
| 2023* | $36,816 | $34,713 |
| 2024* | $37,961 | $35,911 |
| 2025* | $39,141 | $37,150 |
