| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $51,552 | $30,775 |
| 2016 | $54,951 | $32,820 |
| 2017 | $56,494 | $34,415 |
| 2018 | $56,494 | $33,144 |
| 2019 | $61,452 | $31,122 |
| 2020 | $64,644 | $34,314 |
| 2021* | $67,999 | $35,982 |
| 2022* | $71,528 | $37,730 |
| 2023* | $75,240 | $39,564 |
| 2024* | $79,145 | $41,487 |
| 2025* | $83,253 | $43,503 |