| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $31,011 | $25,958 |
| 2016 | $32,575 | $27,137 |
| 2017 | $33,376 | $28,152 |
| 2018 | $33,376 | $27,583 |
| 2019 | $37,475 | $31,678 |
| 2020 | $30,780 | $24,983 |
| 2021* | $31,537 | $25,917 |
| 2022* | $32,313 | $26,887 |
| 2023* | $33,108 | $27,892 |
| 2024* | $33,922 | $28,935 |
| 2025* | $34,757 | $30,018 |