| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $14,000 | $10,181 |
| 2016 | $14,775 | $10,772 |
| 2017 | $14,977 | $10,297 |
| 2018 | $14,977 | $10,402 |
| 2019 | $16,175 | $10,622 |
| 2020 | $16,211 | $10,658 |
| 2021* | $16,433 | $10,767 |
| 2022* | $16,658 | $10,877 |
| 2023* | $16,886 | $10,987 |
| 2024* | $17,118 | $11,100 |
| 2025* | $17,352 | $11,213 |