| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $37,869 | $22,324 |
| 2016 | $40,284 | $24,017 |
| 2017 | $42,042 | $23,017 |
| 2018 | $42,042 | $21,840 |
| 2019 | $48,766 | $28,059 |
| 2020 | $49,366 | $28,659 |
| 2021* | $51,518 | $29,272 |
| 2022* | $53,765 | $29,899 |
| 2023* | $56,109 | $30,539 |
| 2024* | $58,555 | $31,192 |
| 2025* | $61,108 | $31,860 |