| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $41,421 | $21,958 |
| 2016 | $42,524 | $22,718 |
| 2017 | $43,686 | $24,377 |
| 2018 | $43,686 | $23,010 |
| 2019 | $46,763 | $23,603 |
| 2020 | $49,048 | $25,888 |
| 2021* | $50,387 | $26,784 |
| 2022* | $51,763 | $27,710 |
| 2023* | $53,176 | $28,669 |
| 2024* | $54,627 | $29,661 |
| 2025* | $56,119 | $30,687 |