| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,806 | $20,844 |
| 2016 | $27,542 | $21,697 |
| 2017 | $28,504 | $22,432 |
| 2018 | $28,504 | $21,661 |
| 2019 | $30,380 | $23,325 |
| 2020 | $31,090 | $24,035 |
| 2021* | $31,945 | $24,850 |
| 2022* | $32,823 | $25,692 |
| 2023* | $33,726 | $26,563 |
| 2024* | $34,654 | $27,464 |
| 2025* | $35,607 | $28,395 |
