| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,456 | $14,892 |
| 2016 | $22,644 | $14,987 |
| 2017 | $22,764 | $15,768 |
| 2018 | $22,764 | $15,465 |
| 2019 | $24,606 | $15,455 |
| 2020 | $24,606 | $15,455 |
| 2021* | $24,736 | $15,455 |
| 2022* | $24,868 | $15,455 |
| 2023* | $24,999 | $15,455 |
| 2024* | $25,132 | $15,455 |
| 2025* | $25,265 | $15,455 |