| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $40,932 | $21,103 |
| 2016 | $41,844 | $22,840 |
| 2017 | $42,654 | $21,592 |
| 2018 | $42,654 | $20,241 |
| 2019 | $46,440 | $23,308 |
| 2020 | $48,950 | $25,818 |
| 2021* | $50,042 | $27,943 |
| 2022* | $51,158 | $30,243 |
| 2023* | $52,298 | $32,731 |
| 2024* | $53,465 | $35,425 |
| 2025* | $54,657 | $38,341 |