| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,506 | $44,861 |
| 2016 | $49,190 | $43,316 |
| 2017 | $37,078 | $30,750 |
| 2018 | $37,078 | $31,589 |
| 2019 | $38,995 | $30,228 |
| 2020 | $40,120 | $31,353 |
| 2021* | $40,686 | $30,274 |
| 2022* | $41,259 | $29,233 |
| 2023* | $41,841 | $28,227 |
| 2024* | $42,431 | $27,256 |
| 2025* | $43,029 | $26,319 |