| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,544 | $19,236 |
| 2016 | $39,760 | $19,921 |
| 2017 | $40,640 | $21,219 |
| 2018 | $40,640 | $20,514 |
| 2019 | $42,234 | $20,794 |
| 2020 | $43,110 | $21,670 |
| 2021* | $44,063 | $22,441 |
| 2022* | $45,037 | $23,240 |
| 2023* | $46,032 | $24,068 |
| 2024* | $47,049 | $24,925 |
| 2025* | $48,089 | $25,812 |