| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $68,400 | $41,953 |
| 2016 | $69,710 | $39,391 |
| 2017 | $71,790 | $39,285 |
| 2018 | $71,790 | $40,248 |
| 2019 | $75,502 | $41,808 |
| 2020 | $77,632 | $43,938 |
| 2021* | $79,821 | $45,014 |
| 2022* | $82,072 | $46,117 |
| 2023* | $84,387 | $47,247 |
| 2024* | $86,766 | $48,405 |
| 2025* | $89,213 | $49,591 |