| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $46,008 | $28,315 |
| 2016 | $47,328 | $30,121 |
| 2017 | $48,902 | $31,510 |
| 2018 | $48,902 | $31,148 |
| 2019 | $51,930 | $32,923 |
| 2020 | $53,460 | $34,453 |
| 2021* | $55,037 | $36,055 |
| 2022* | $56,661 | $37,732 |
| 2023* | $58,332 | $39,486 |
| 2024* | $60,053 | $41,322 |
| 2025* | $61,825 | $43,244 |