| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $31,011 | $25,579 |
| 2016 | $32,575 | $26,854 |
| 2017 | $33,376 | $26,938 |
| 2018 | $33,376 | $26,029 |
| 2019 | $35,125 | $26,312 |
| 2020 | $31,388 | $22,575 |
| 2021* | $32,160 | $22,645 |
| 2022* | $32,951 | $22,715 |
| 2023* | $33,762 | $22,786 |
| 2024* | $34,592 | $22,856 |
| 2025* | $35,443 | $22,927 |