| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | N/A | N/A |
| 2016 | $34,157 | $27,720 |
| 2017 | $34,157 | $28,502 |
| 2018 | $34,157 | $27,859 |
| 2019 | $32,865 | $26,721 |
| 2020 | $31,558 | $25,414 |
| 2021* | $30,962 | $24,608 |
| 2022* | $30,376 | $23,828 |
| 2023* | $29,802 | $23,073 |
| 2024* | $29,239 | $22,342 |
| 2025* | $28,686 | $21,633 |