| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,305 | $19,323 |
| 2016 | $39,125 | $20,167 |
| 2017 | $39,789 | $19,133 |
| 2018 | $39,789 | $19,356 |
| 2019 | $41,018 | $18,045 |
| 2020 | $41,456 | $18,483 |
| 2021* | $42,161 | $18,699 |
| 2022* | $42,877 | $18,918 |
| 2023* | $43,606 | $19,139 |
| 2024* | $44,348 | $19,363 |
| 2025* | $45,102 | $19,590 |
