| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $52,468 | $30,938 |
| 2016 | $55,752 | $33,151 |
| 2017 | $57,824 | $33,647 |
| 2018 | $57,824 | $31,804 |
| 2019 | $61,088 | $28,748 |
| 2020 | $62,890 | $30,550 |
| 2021* | $65,230 | $31,008 |
| 2022* | $67,656 | $31,473 |
| 2023* | $70,173 | $31,945 |
| 2024* | $72,783 | $32,425 |
| 2025* | $75,491 | $32,911 |