| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,002 | $18,797 |
| 2016 | $37,344 | $21,175 |
| 2017 | $38,373 | $21,998 |
| 2018 | $38,373 | $22,716 |
| 2019 | $40,805 | $24,297 |
| 2020 | $42,215 | $25,707 |
| 2021* | $43,676 | $27,198 |
| 2022* | $45,187 | $28,775 |
| 2023* | $46,750 | $30,444 |
| 2024* | $48,368 | $32,210 |
| 2025* | $50,041 | $34,078 |
