| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,880 | $25,002 |
| 2016 | $39,597 | $24,568 |
| 2017 | $40,762 | $23,929 |
| 2018 | $40,762 | $25,491 |
| 2019 | $43,190 | $19,596 |
| 2020 | $44,081 | $20,487 |
| 2021* | $44,989 | $20,131 |
| 2022* | $45,916 | $19,780 |
| 2023* | $46,862 | $19,436 |
| 2024* | $47,827 | $19,098 |
| 2025* | $48,812 | $18,766 |