| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,290 | $20,144 |
| 2016 | $36,745 | $20,029 |
| 2017 | $38,660 | $19,452 |
| 2018 | $38,660 | $20,088 |
| 2019 | $41,972 | $20,690 |
| 2020 | $43,593 | $22,311 |
| 2021* | $45,276 | $22,980 |
| 2022* | $47,023 | $23,670 |
| 2023* | $48,838 | $24,380 |
| 2024* | $50,724 | $25,111 |
| 2025* | $52,682 | $25,865 |
