| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,232 | $15,267 |
| 2016 | $26,003 | $14,262 |
| 2017 | $26,083 | $11,866 |
| 2018 | $26,083 | $10,985 |
| 2019 | $26,466 | $11,164 |
| 2020 | $28,799 | $13,497 |
| 2021* | $29,222 | $12,609 |
| 2022* | $29,652 | $11,779 |
| 2023* | $30,088 | $11,004 |
| 2024* | $30,530 | $10,280 |
| 2025* | $30,979 | $9,604 |
