| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,650 | $25,268 |
| 2016 | $50,321 | $26,938 |
| 2017 | $52,036 | $28,386 |
| 2018 | $52,036 | $26,320 |
| 2019 | $55,130 | $28,380 |
| 2020 | $56,864 | $30,114 |
| 2021* | $58,803 | $31,954 |
| 2022* | $60,808 | $33,906 |
| 2023* | $62,882 | $35,978 |
| 2024* | $65,026 | $38,176 |
| 2025* | $67,243 | $40,509 |