| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $30,785 | $20,136 |
| 2016 | $31,200 | $17,481 |
| 2017 | $24,330 | $9,993 |
| 2018 | $32,730 | $18,123 |
| 2019 | $34,870 | $20,299 |
| 2020 | $36,400 | $21,829 |
| 2021* | $37,998 | $23,475 |
| 2022* | $39,666 | $25,245 |
| 2023* | $41,407 | $27,148 |
| 2024* | $43,225 | $29,195 |
| 2025* | $45,123 | $31,397 |