| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,669 | $12,624 |
| 2016 | $20,895 | N/A |
| 2017 | $21,284 | $15,909 |
| 2018 | $21,284 | $17,919 |
| 2019 | $21,967 | $5,738 |
| 2020 | $23,223 | $6,994 |
| 2021* | $23,968 | $7,877 |
| 2022* | $24,738 | $8,872 |
| 2023* | $25,532 | $9,993 |
| 2024* | $26,352 | $11,255 |
| 2025* | $27,197 | $12,676 |