| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $31,406 | $21,805 |
| 2016 | $31,930 | $22,426 |
| 2017 | $33,852 | $23,321 |
| 2018 | $33,852 | $23,149 |
| 2019 | $35,310 | $23,493 |
| 2020 | $35,310 | $23,493 |
| 2021* | $35,900 | $23,843 |
| 2022* | $36,499 | $24,198 |
| 2023* | $37,109 | $24,559 |
| 2024* | $37,728 | $24,925 |
| 2025* | $38,359 | $25,296 |
