| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $20,180 | $14,541 |
| 2016 | $20,400 | $14,797 |
| 2017 | $24,450 | $19,154 |
| 2018 | $24,450 | $18,804 |
| 2019 | $25,400 | $19,658 |
| 2020 | $25,400 | $19,658 |
| 2021* | $25,677 | $20,004 |
| 2022* | $25,957 | $20,356 |
| 2023* | $26,240 | $20,714 |
| 2024* | $26,526 | $21,079 |
| 2025* | $26,815 | $21,450 |