| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $43,700 | $24,594 |
| 2016 | $46,300 | $24,710 |
| 2017 | $46,500 | $22,330 |
| 2018 | $46,500 | $22,542 |
| 2019 | $48,890 | $23,668 |
| 2020 | $49,690 | $24,468 |
| 2021* | $50,505 | $24,700 |
| 2022* | $51,333 | $24,935 |
| 2023* | $52,175 | $25,172 |
| 2024* | $53,031 | $25,411 |
| 2025* | $53,900 | $25,653 |