| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $39,744 | $22,084 |
| 2016 | $41,084 | $23,044 |
| 2017 | $42,410 | $23,342 |
| 2018 | $42,410 | $25,184 |
| 2019 | $45,890 | $25,349 |
| 2020 | $48,954 | $28,413 |
| 2021* | $50,604 | $29,649 |
| 2022* | $52,309 | $30,939 |
| 2023* | $54,072 | $32,285 |
| 2024* | $55,894 | $33,689 |
| 2025* | $57,778 | $35,154 |