| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $41,120 | $26,259 |
| 2016 | $42,010 | $26,703 |
| 2017 | $43,404 | $26,530 |
| 2018 | $43,404 | $26,270 |
| 2019 | $44,430 | $24,132 |
| 2020 | $45,760 | $25,462 |
| 2021* | $46,840 | $25,296 |
| 2022* | $47,945 | $25,132 |
| 2023* | $49,077 | $24,969 |
| 2024* | $50,235 | $24,806 |
| 2025* | $51,421 | $24,645 |