| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $40,174 | $21,679 |
| 2016 | $41,500 | $19,730 |
| 2017 | $42,450 | $19,972 |
| 2018 | $42,450 | $18,316 |
| 2019 | $45,300 | $17,265 |
| 2020 | $46,726 | $18,691 |
| 2021* | $48,198 | $17,618 |
| 2022* | $49,716 | $16,607 |
| 2023* | $51,282 | $15,654 |
| 2024* | $52,898 | $14,755 |
| 2025* | $54,564 | $13,908 |
