| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,230 | $20,504 |
| 2016 | $36,120 | $19,506 |
| 2017 | $36,860 | $18,619 |
| 2018 | $36,860 | $19,322 |
| 2019 | $37,896 | $19,669 |
| 2020 | $38,236 | $20,009 |
| 2021* | $38,580 | $20,355 |
| 2022* | $38,927 | $20,707 |
| 2023* | $39,278 | $21,066 |
| 2024* | $39,631 | $21,430 |
| 2025* | $39,988 | $21,801 |
