| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,896 | $24,041 |
| 2016 | $40,830 | $23,568 |
| 2017 | $41,891 | $23,346 |
| 2018 | $41,891 | $22,990 |
| 2019 | $45,020 | $23,720 |
| 2020 | $46,314 | $25,014 |
| 2021* | $47,643 | $24,779 |
| 2022* | $49,011 | $24,546 |
| 2023* | $50,417 | $24,315 |
| 2024* | $51,864 | $24,087 |
| 2025* | $53,353 | $23,860 |