| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,796 | $31,806 |
| 2016 | $50,422 | $32,594 |
| 2017 | $52,108 | $32,798 |
| 2018 | $52,108 | $32,563 |
| 2019 | $56,680 | $33,497 |
| 2020 | $59,104 | $35,921 |
| 2021* | $61,078 | $36,812 |
| 2022* | $63,118 | $37,725 |
| 2023* | $65,226 | $38,660 |
| 2024* | $67,405 | $39,619 |
| 2025* | $69,656 | $40,602 |