| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,800 | $15,922 |
| 2016 | $22,800 | $15,929 |
| 2017 | $23,120 | $14,682 |
| 2018 | $23,120 | $16,275 |
| 2019 | $23,932 | $13,877 |
| 2020 | $24,234 | $14,179 |
| 2021* | $24,539 | $14,185 |
| 2022* | $24,849 | $14,190 |
| 2023* | $25,162 | $14,196 |
| 2024* | $25,479 | $14,202 |
| 2025* | $25,800 | $14,207 |
