| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $16,832 | $11,279 |
| 2016 | $16,952 | $11,408 |
| 2017 | $21,977 | $16,567 |
| 2018 | $21,977 | $16,519 |
| 2019 | $22,441 | $16,390 |
| 2020 | $23,541 | $17,490 |
| 2021* | $24,038 | $17,689 |
| 2022* | $24,545 | $17,891 |
| 2023* | $25,063 | $18,095 |
| 2024* | $25,592 | $18,301 |
| 2025* | $26,132 | $18,510 |
