| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $64,870 | $24,345 |
| 2016 | $67,357 | $23,148 |
| 2017 | $69,725 | $22,995 |
| 2018 | $69,725 | $20,795 |
| 2019 | $74,480 | $21,031 |
| 2020 | $75,094 | $21,645 |
| 2021* | $77,737 | $21,502 |
| 2022* | $80,474 | $21,360 |
| 2023* | $83,306 | $21,219 |
| 2024* | $86,239 | $21,079 |
| 2025* | $89,274 | $20,940 |