| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $37,820 | $21,451 |
| 2016 | $40,611 | $24,244 |
| 2017 | $42,040 | $26,113 |
| 2018 | $42,040 | $23,380 |
| 2019 | $44,003 | $23,678 |
| 2020 | $45,731 | $25,406 |
| 2021* | $47,528 | $27,261 |
| 2022* | $49,396 | $29,251 |
| 2023* | $51,337 | $31,386 |
| 2024* | $53,355 | $33,677 |
| 2025* | $55,452 | $36,136 |