| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $27,219 | $22,289 |
| 2016 | $30,616 | $24,140 |
| 2017 | $30,454 | $23,740 |
| 2018 | $30,454 | $23,830 |
| 2019 | $31,674 | $23,800 |
| 2020 | $33,170 | $25,296 |
| 2021* | $34,500 | $25,392 |
| 2022* | $35,884 | $25,489 |
| 2023* | $37,323 | $25,585 |
| 2024* | $38,819 | $25,683 |
| 2025* | $40,376 | $25,780 |
