| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,399 | $9,829 |
| 2016 | $19,338 | $8,862 |
| 2017 | $20,364 | $9,023 |
| 2018 | $20,364 | $9,714 |
| 2019 | $21,771 | $10,697 |
| 2020 | $23,847 | $12,773 |
| 2021* | $25,113 | $13,751 |
| 2022* | $26,447 | $14,805 |
| 2023* | $27,851 | $15,939 |
| 2024* | $29,330 | $17,160 |
| 2025* | $30,887 | $18,474 |
