| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $16,100 | $10,611 |
| 2016 | $16,100 | $10,264 |
| 2017 | $16,500 | $9,767 |
| 2018 | $16,500 | $9,755 |
| 2019 | $16,700 | $10,351 |
| 2020 | $16,700 | $10,351 |
| 2021* | $16,700 | $10,339 |
| 2022* | $16,700 | $10,326 |
| 2023* | $16,700 | $10,314 |
| 2024* | $16,700 | $10,301 |
| 2025* | $16,700 | $10,289 |