| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,495 | $26,784 |
| 2016 | $49,860 | $25,884 |
| 2017 | $50,720 | $26,990 |
| 2018 | $50,720 | $26,096 |
| 2019 | $55,390 | $27,671 |
| 2020 | $57,268 | $29,549 |
| 2021* | $59,209 | $30,811 |
| 2022* | $61,217 | $32,126 |
| 2023* | $63,292 | $33,498 |
| 2024* | $65,437 | $34,929 |
| 2025* | $67,656 | $36,420 |