| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,450 | $28,726 |
| 2016 | $48,210 | $27,618 |
| 2017 | $49,010 | $27,382 |
| 2018 | $49,010 | $27,425 |
| 2019 | $48,620 | $25,382 |
| 2020 | $49,570 | $26,332 |
| 2021* | $50,363 | $26,108 |
| 2022* | $51,169 | $25,886 |
| 2023* | $51,988 | $25,666 |
| 2024* | $52,819 | $25,448 |
| 2025* | $53,665 | $25,232 |