| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,913 | $34,936 |
| 2016 | $50,574 | $32,393 |
| 2017 | $52,396 | $32,556 |
| 2018 | $52,396 | $31,210 |
| 2019 | $56,826 | $31,247 |
| 2020 | $54,826 | $29,247 |
| 2021* | $56,690 | $28,039 |
| 2022* | $58,618 | $26,881 |
| 2023* | $60,611 | $25,771 |
| 2024* | $62,671 | $24,707 |
| 2025* | $64,802 | $23,686 |