| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $45,550 | $26,673 |
| 2016 | $47,600 | $29,403 |
| 2017 | $49,600 | $28,493 |
| 2018 | $49,600 | $27,319 |
| 2019 | $52,900 | $27,402 |
| 2020 | $54,500 | $29,002 |
| 2021* | $56,789 | $29,089 |
| 2022* | $59,174 | $29,176 |
| 2023* | $61,659 | $29,264 |
| 2024* | $64,249 | $29,352 |
| 2025* | $66,948 | $29,440 |