| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,752 | $14,446 |
| 2016 | $23,483 | $14,666 |
| 2017 | $24,500 | $15,515 |
| 2018 | $24,500 | $15,631 |
| 2019 | $25,070 | $13,375 |
| 2020 | $26,240 | $14,545 |
| 2021* | $27,082 | $14,766 |
| 2022* | $27,952 | $14,991 |
| 2023* | $28,849 | $15,218 |
| 2024* | $29,775 | $15,450 |
| 2025* | $30,731 | $15,685 |
