| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $42,600 | $25,407 |
| 2016 | $43,080 | $24,930 |
| 2017 | $44,290 | $25,951 |
| 2018 | $44,290 | $24,260 |
| 2019 | $45,250 | $21,580 |
| 2020 | $45,490 | $21,820 |
| 2021* | $46,004 | $21,410 |
| 2022* | $46,524 | $21,007 |
| 2023* | $47,050 | $20,612 |
| 2024* | $47,581 | $20,225 |
| 2025* | $48,119 | $19,845 |