| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,544 | $14,350 |
| 2016 | $26,616 | $22,233 |
| 2017 | $27,626 | $20,877 |
| 2018 | $27,626 | $17,723 |
| 2019 | $28,770 | $23,245 |
| 2020 | $28,930 | $23,405 |
| 2021* | $30,026 | $23,566 |
| 2022* | $31,164 | $23,729 |
| 2023* | $32,346 | $23,893 |
| 2024* | $33,571 | $24,058 |
| 2025* | $34,844 | $24,224 |
