| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $55,235 | $31,045 |
| 2016 | $56,823 | $29,679 |
| 2017 | $58,458 | $32,415 |
| 2018 | $58,458 | $29,815 |
| 2019 | $62,166 | $28,187 |
| 2020 | $64,260 | $30,281 |
| 2021* | $66,111 | $28,949 |
| 2022* | $68,015 | $27,675 |
| 2023* | $69,973 | $26,457 |
| 2024* | $71,989 | $25,293 |
| 2025* | $74,062 | $24,180 |