| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $57,061 | $39,432 |
| 2016 | $58,637 | $40,559 |
| 2017 | $59,904 | $40,318 |
| 2018 | $59,904 | $39,229 |
| 2019 | $64,050 | $42,479 |
| 2020 | $65,706 | $44,135 |
| 2021* | $67,408 | $45,397 |
| 2022* | $69,154 | $46,696 |
| 2023* | $70,945 | $48,031 |
| 2024* | $72,782 | $49,405 |
| 2025* | $74,667 | $50,818 |