| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,072 | $25,542 |
| 2016 | $45,340 | $25,689 |
| 2017 | $46,770 | $26,015 |
| 2018 | $46,770 | $24,374 |
| 2019 | $49,900 | $23,519 |
| 2020 | $50,220 | $23,839 |
| 2021* | $51,666 | $23,977 |
| 2022* | $53,154 | $24,116 |
| 2023* | $54,685 | $24,256 |
| 2024* | $56,260 | $24,397 |
| 2025* | $57,880 | $24,538 |