| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $34,900 | $20,723 |
| 2016 | $35,960 | $21,383 |
| 2017 | $37,600 | $21,672 |
| 2018 | $37,600 | $19,824 |
| 2019 | $40,200 | $21,553 |
| 2020 | $41,650 | $23,003 |
| 2021* | $43,154 | $23,734 |
| 2022* | $44,711 | $24,489 |
| 2023* | $46,325 | $25,268 |
| 2024* | $47,998 | $26,072 |
| 2025* | $49,731 | $26,901 |