| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $61,275 | $40,575 |
| 2016 | $62,740 | $40,257 |
| 2017 | $64,325 | $42,171 |
| 2018 | $64,325 | $40,145 |
| 2019 | $67,860 | $42,083 |
| 2020 | $69,815 | $44,038 |
| 2021* | $71,581 | $46,086 |
| 2022* | $73,392 | $48,229 |
| 2023* | $75,249 | $50,471 |
| 2024* | $77,153 | $52,818 |
| 2025* | $79,105 | $55,274 |