| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $35,060 | $28,982 |
| 2016 | $35,096 | $29,560 |
| 2017 | $33,380 | $27,535 |
| 2018 | $33,380 | $25,211 |
| 2019 | $34,764 | $30,690 |
| 2020 | $35,192 | $31,118 |
| 2021* | $35,227 | $31,551 |
| 2022* | $35,262 | $31,989 |
| 2023* | $35,298 | $32,434 |
| 2024* | $35,333 | $32,885 |
| 2025* | $35,368 | $33,342 |
