| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,910 | $12,074 |
| 2016 | $19,210 | $8,232 |
| 2017 | $19,410 | $5,777 |
| 2018 | $19,410 | $10,395 |
| 2019 | $20,260 | $8,368 |
| 2020 | $20,260 | $8,368 |
| 2021* | $20,471 | $6,736 |
| 2022* | $20,684 | $5,423 |
| 2023* | $20,899 | $4,365 |
| 2024* | $21,116 | $3,514 |
| 2025* | $21,336 | $2,829 |
