| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,156 | $28,242 |
| 2016 | $46,046 | $29,514 |
| 2017 | $47,734 | $28,798 |
| 2018 | $47,734 | $28,779 |
| 2019 | $51,454 | $30,095 |
| 2020 | $54,048 | $32,689 |
| 2021* | $56,361 | $34,160 |
| 2022* | $58,774 | $35,697 |
| 2023* | $61,289 | $37,304 |
| 2024* | $63,912 | $38,982 |
| 2025* | $66,648 | $40,736 |