| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,158 | $14,141 |
| 2016 | $20,204 | $15,219 |
| 2017 | $21,005 | $15,683 |
| 2018 | $21,005 | $14,482 |
| 2019 | $23,205 | $17,676 |
| 2020 | $23,221 | $17,692 |
| 2021* | $24,141 | $18,232 |
| 2022* | $25,097 | $18,788 |
| 2023* | $26,090 | $19,361 |
| 2024* | $27,124 | $19,951 |
| 2025* | $28,198 | $20,560 |
