| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $32,910 | $14,796 |
| 2016 | $33,240 | $14,593 |
| 2017 | $35,650 | $17,590 |
| 2018 | $35,650 | $17,462 |
| 2019 | $37,100 | $16,536 |
| 2020 | $37,960 | $17,396 |
| 2021* | $38,841 | $17,269 |
| 2022* | $39,742 | $17,143 |
| 2023* | $40,664 | $17,018 |
| 2024* | $41,607 | $16,894 |
| 2025* | $42,572 | $16,770 |