| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $52,830 | $27,903 |
| 2016 | $54,280 | $26,322 |
| 2017 | $55,800 | $27,309 |
| 2018 | $55,800 | $31,467 |
| 2019 | $59,270 | $23,653 |
| 2020 | $61,290 | $25,673 |
| 2021* | $63,006 | $26,636 |
| 2022* | $64,770 | $27,635 |
| 2023* | $66,584 | $28,671 |
| 2024* | $68,448 | $29,746 |
| 2025* | $70,365 | $30,862 |