| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $41,897 | $31,031 |
| 2016 | $42,078 | $33,164 |
| 2017 | $42,267 | $30,076 |
| 2018 | $42,267 | $31,069 |
| 2019 | $46,318 | $33,894 |
| 2020 | $46,318 | $33,894 |
| 2021* | $46,517 | $35,013 |
| 2022* | $46,717 | $36,168 |
| 2023* | $46,918 | $37,361 |
| 2024* | $47,120 | $38,594 |
| 2025* | $47,322 | $39,868 |