| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,413 | $19,358 |
| 2016 | $30,084 | $20,279 |
| 2017 | $31,418 | $20,602 |
| 2018 | $31,418 | $19,524 |
| 2019 | $33,087 | $21,088 |
| 2020 | $33,897 | $21,898 |
| 2021* | $34,727 | $22,739 |
| 2022* | $35,578 | $23,612 |
| 2023* | $36,450 | $24,519 |
| 2024* | $37,343 | $25,460 |
| 2025* | $38,258 | $26,438 |