| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $42,020 | $25,321 |
| 2016 | $44,308 | $26,596 |
| 2017 | $45,568 | $26,163 |
| 2018 | $45,568 | $23,975 |
| 2019 | $47,708 | $25,980 |
| 2020 | $48,920 | $27,192 |
| 2021* | $50,309 | $28,462 |
| 2022* | $51,738 | $29,791 |
| 2023* | $53,207 | $31,182 |
| 2024* | $54,719 | $32,638 |
| 2025* | $56,273 | $34,163 |