| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,260 | $27,877 |
| 2016 | $49,060 | $28,786 |
| 2017 | $49,744 | $29,197 |
| 2018 | $49,744 | $30,330 |
| 2019 | $52,504 | $26,354 |
| 2020 | $53,980 | $27,830 |
| 2021* | $55,497 | $28,737 |
| 2022* | $57,056 | $29,674 |
| 2023* | $58,660 | $30,641 |
| 2024* | $60,308 | $31,640 |
| 2025* | $62,003 | $32,672 |