| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $51,840 | $28,063 |
| 2016 | $53,150 | $27,071 |
| 2017 | $54,600 | $27,405 |
| 2018 | $54,600 | $26,053 |
| 2019 | $58,770 | $22,805 |
| 2020 | $59,650 | $23,685 |
| 2021* | $61,159 | $22,849 |
| 2022* | $62,706 | $22,042 |
| 2023* | $64,293 | $21,264 |
| 2024* | $65,920 | $20,514 |
| 2025* | $67,587 | $19,789 |