| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $15,700 | $6,435 |
| 2016 | $16,000 | $5,418 |
| 2017 | $16,300 | $3,851 |
| 2018 | $16,300 | $3,794 |
| 2019 | $21,550 | $3,634 |
| 2020 | $22,800 | $4,884 |
| 2021* | $23,235 | $4,678 |
| 2022* | $23,679 | $4,480 |
| 2023* | $24,132 | $4,291 |
| 2024* | $24,592 | $4,110 |
| 2025* | $25,062 | $3,937 |
