| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,970 | $23,455 |
| 2016 | $48,831 | $25,361 |
| 2017 | $50,420 | $25,647 |
| 2018 | $50,420 | $25,022 |
| 2019 | $53,480 | $23,061 |
| 2020 | $60,241 | $29,822 |
| 2021* | $62,199 | $30,159 |
| 2022* | $64,220 | $30,500 |
| 2023* | $66,307 | $30,844 |
| 2024* | $68,462 | $31,193 |
| 2025* | $70,687 | $31,545 |