| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $24,004 | $13,701 |
| 2016 | $25,577 | $15,961 |
| 2017 | $25,966 | $15,964 |
| 2018 | $25,966 | $16,053 |
| 2019 | $25,031 | $14,432 |
| 2020 | $24,795 | $14,196 |
| 2021* | $24,795 | $14,199 |
| 2022* | $24,795 | $14,202 |
| 2023* | $24,795 | $14,205 |
| 2024* | $24,795 | $14,207 |
| 2025* | $24,795 | $14,210 |