| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,248 | $24,004 |
| 2016 | $36,448 | $24,882 |
| 2017 | $37,266 | $24,662 |
| 2018 | $37,266 | $24,463 |
| 2019 | $38,868 | $24,640 |
| 2020 | $39,972 | $25,744 |
| 2021* | $40,867 | $25,929 |
| 2022* | $41,783 | $26,116 |
| 2023* | $42,719 | $26,304 |
| 2024* | $43,676 | $26,493 |
| 2025* | $44,654 | $26,684 |