| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $39,164 | $28,753 |
| 2016 | $41,530 | $26,481 |
| 2017 | $43,644 | $26,319 |
| 2018 | $43,644 | $28,460 |
| 2019 | $47,769 | $27,115 |
| 2020 | $52,536 | $31,882 |
| 2021* | $55,709 | $31,688 |
| 2022* | $59,074 | $31,494 |
| 2023* | $62,642 | $31,302 |
| 2024* | $66,426 | $31,111 |
| 2025* | $70,438 | $30,921 |
