| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,600 | $25,933 |
| 2016 | $50,240 | $26,445 |
| 2017 | $51,878 | $25,796 |
| 2018 | $51,878 | $24,679 |
| 2019 | $55,610 | $24,430 |
| 2020 | $57,672 | $26,492 |
| 2021* | $59,616 | $26,224 |
| 2022* | $61,625 | $25,960 |
| 2023* | $63,701 | $25,697 |
| 2024* | $65,848 | $25,438 |
| 2025* | $68,067 | $25,181 |