| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,602 | $20,074 |
| 2016 | $24,920 | $18,923 |
| 2017 | $25,940 | $19,511 |
| 2018 | $25,940 | $19,456 |
| 2019 | $28,110 | $21,430 |
| 2020 | $29,690 | $23,010 |
| 2021* | $30,904 | $23,726 |
| 2022* | $32,168 | $24,463 |
| 2023* | $33,484 | $25,224 |
| 2024* | $34,853 | $26,009 |
| 2025* | $36,279 | $26,818 |
