| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $24,913 | $12,635 |
| 2016 | $25,001 | $12,929 |
| 2017 | $25,183 | $12,734 |
| 2018 | $25,183 | $12,976 |
| 2019 | $25,588 | $12,024 |
| 2020 | $25,660 | $12,096 |
| 2021* | $25,750 | $12,169 |
| 2022* | $25,840 | $12,242 |
| 2023* | $25,930 | $12,315 |
| 2024* | $26,021 | $12,389 |
| 2025* | $26,112 | $12,463 |
