| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $43,774 | $23,930 |
| 2016 | $45,247 | $25,284 |
| 2017 | $46,260 | $26,738 |
| 2018 | $46,260 | $23,205 |
| 2019 | $50,700 | $32,461 |
| 2020 | $52,613 | $34,374 |
| 2021* | $54,386 | $36,351 |
| 2022* | $56,219 | $38,441 |
| 2023* | $58,113 | $40,651 |
| 2024* | $60,072 | $42,988 |
| 2025* | $62,096 | $45,460 |