| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $27,586 | $14,121 |
| 2016 | $26,137 | $12,580 |
| 2017 | $26,784 | $13,106 |
| 2018 | $26,784 | $13,838 |
| 2019 | $28,715 | $15,610 |
| 2020 | $29,613 | $16,508 |
| 2021* | $30,347 | $17,431 |
| 2022* | $31,100 | $18,405 |
| 2023* | $31,871 | $19,434 |
| 2024* | $32,662 | $20,520 |
| 2025* | $33,472 | $21,667 |
