| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $46,930 | $21,331 |
| 2016 | $48,820 | $21,235 |
| 2017 | $50,166 | $20,790 |
| 2018 | $50,166 | $19,445 |
| 2019 | $52,478 | $19,880 |
| 2020 | $54,004 | $21,406 |
| 2021* | $55,576 | $21,310 |
| 2022* | $57,193 | $21,214 |
| 2023* | $58,857 | $21,118 |
| 2024* | $60,570 | $21,023 |
| 2025* | $62,332 | $20,929 |