| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $60,586 | $37,732 |
| 2016 | $62,272 | $38,116 |
| 2017 | $64,234 | $35,502 |
| 2018 | $64,234 | $34,822 |
| 2019 | $67,694 | $42,091 |
| 2020 | $69,366 | $43,763 |
| 2021* | $71,294 | $44,209 |
| 2022* | $73,276 | $44,660 |
| 2023* | $75,313 | $45,116 |
| 2024* | $77,407 | $45,576 |
| 2025* | $79,559 | $46,041 |