| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,092 | $30,820 |
| 2016 | $49,856 | $31,362 |
| 2017 | $54,020 | $34,283 |
| 2018 | $54,020 | $32,781 |
| 2019 | $58,488 | $32,559 |
| 2020 | $60,318 | $34,389 |
| 2021* | $62,532 | $34,994 |
| 2022* | $64,827 | $35,610 |
| 2023* | $67,206 | $36,237 |
| 2024* | $69,672 | $36,875 |
| 2025* | $72,229 | $37,524 |