| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $50,716 | $31,436 |
| 2016 | $52,206 | $32,596 |
| 2017 | $53,452 | $33,539 |
| 2018 | $53,452 | $33,159 |
| 2019 | $56,674 | $34,143 |
| 2020 | $58,618 | $36,087 |
| 2021* | $60,341 | $37,159 |
| 2022* | $62,115 | $38,262 |
| 2023* | $63,942 | $39,399 |
| 2024* | $65,821 | $40,569 |
| 2025* | $67,757 | $41,774 |