| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $41,754 | $19,639 |
| 2016 | $43,276 | $20,648 |
| 2017 | $44,430 | $21,247 |
| 2018 | $44,430 | $20,650 |
| 2019 | $47,330 | $23,212 |
| 2020 | $48,775 | $24,657 |
| 2021* | $50,263 | $25,924 |
| 2022* | $51,796 | $27,257 |
| 2023* | $53,375 | $28,658 |
| 2024* | $55,003 | $30,131 |
| 2025* | $56,681 | $31,680 |