| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $35,255 | $18,172 |
| 2016 | $36,369 | $18,351 |
| 2017 | $36,989 | $18,448 |
| 2018 | $36,989 | $18,670 |
| 2019 | $39,376 | $20,250 |
| 2020 | $41,528 | $22,402 |
| 2021* | $42,840 | $22,671 |
| 2022* | $44,194 | $22,943 |
| 2023* | $45,591 | $23,218 |
| 2024* | $47,031 | $23,497 |
| 2025* | $48,517 | $23,779 |
