| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,048 | $19,207 |
| 2016 | $30,176 | $17,444 |
| 2017 | $31,302 | $17,030 |
| 2018 | $31,302 | $13,772 |
| 2019 | $33,260 | $18,456 |
| 2020 | $35,200 | $20,396 |
| 2021* | $36,566 | $19,913 |
| 2022* | $37,985 | $19,441 |
| 2023* | $39,458 | $18,980 |
| 2024* | $40,989 | $18,530 |
| 2025* | $42,580 | $18,091 |