| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $46,462 | $30,994 |
| 2016 | $47,094 | $31,867 |
| 2017 | $48,920 | $32,581 |
| 2018 | $48,920 | $32,742 |
| 2019 | $52,544 | $35,152 |
| 2020 | $54,430 | $37,038 |
| 2021* | $56,384 | $38,082 |
| 2022* | $58,408 | $39,156 |
| 2023* | $60,505 | $40,261 |
| 2024* | $62,677 | $41,396 |
| 2025* | $64,927 | $42,563 |