| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,227 | $16,076 |
| 2016 | $27,039 | $19,028 |
| 2017 | $28,166 | $19,513 |
| 2018 | $28,166 | $19,621 |
| 2019 | $30,065 | $20,640 |
| 2020 | $29,025 | $19,600 |
| 2021* | $29,925 | $20,100 |
| 2022* | $30,852 | $20,612 |
| 2023* | $31,809 | $21,138 |
| 2024* | $32,795 | $21,677 |
| 2025* | $33,812 | $22,230 |
