| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,672 | $28,292 |
| 2016 | $47,226 | $28,610 |
| 2017 | $48,538 | $29,387 |
| 2018 | $48,538 | $28,063 |
| 2019 | $50,838 | $26,406 |
| 2020 | $51,904 | $27,472 |
| 2021* | $53,347 | $27,780 |
| 2022* | $54,830 | $28,091 |
| 2023* | $56,354 | $28,405 |
| 2024* | $57,921 | $28,724 |
| 2025* | $59,531 | $29,045 |