| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $33,546 | $28,671 |
| 2016 | $34,047 | $27,017 |
| 2017 | $34,224 | $26,976 |
| 2018 | $34,224 | $28,294 |
| 2019 | $33,114 | $26,734 |
| 2020 | $42,369 | $35,989 |
| 2021* | $42,589 | $35,935 |
| 2022* | $42,811 | $35,881 |
| 2023* | $43,033 | $35,827 |
| 2024* | $43,257 | $35,774 |
| 2025* | $43,482 | $35,720 |
