| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,648 | $25,130 |
| 2016 | $37,890 | $25,296 |
| 2017 | $39,194 | $25,560 |
| 2018 | $39,194 | $25,039 |
| 2019 | $42,664 | $26,102 |
| 2020 | $44,276 | $27,714 |
| 2021* | $45,799 | $28,002 |
| 2022* | $47,375 | $28,293 |
| 2023* | $49,004 | $28,588 |
| 2024* | $50,690 | $28,885 |
| 2025* | $52,434 | $29,185 |