| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $39,490 | $19,726 |
| 2016 | $40,342 | $21,532 |
| 2017 | $41,936 | $22,975 |
| 2018 | $41,936 | $21,349 |
| 2019 | $44,730 | $24,335 |
| 2020 | $46,376 | $25,981 |
| 2021* | $48,083 | $27,737 |
| 2022* | $49,852 | $29,612 |
| 2023* | $51,687 | $31,614 |
| 2024* | $53,589 | $33,751 |
| 2025* | $55,561 | $36,033 |